[PowerPC] [Book-E] Remove obsolete interrupt binding workaround

Remove an old workaround that is no longer necessary since rS343824.

There used to be a problem with FMan interrupts firing on multiple CPUS
at the same time.

This ended up being due to multicast interrupts being unsupported in the
Freescale PIC (so instead of using a selection algorithm, it would do some
unspecified action, such as interrupting multiple cpus at random.)

Reviewed by: jhibbits
Sponsored by: Tag1 Consulting, Inc.
Differential Revision: https://reviews.freebsd.org/D23829

[PowerPC] [Book-E] Fix dpaa interrupt binding.

After the network epoch was added, we lost the ability to migrate the
ithread in the middle of dispatch, as being in the network epoch will pin
the current thread (for safety reasons.)

Luckily, we don't actually have to do this workaround in the first place,
as we can just bind it to the correct cpu when we preallocate it.

Pass dev through to XX_PreallocAndBindIntr() and actually bind it to the
cpu like it was supposed to in the first place, instad of leaving it
floating and moving it to the correct cpu the first time it fires.

This fixes panics while bringing up dtsec on my X5000.

Reviewed by: jhibbits
Sponsored by: Tag1 Consulting, Inc.
Differential Revision: https://reviews.freebsd.org/D23826

Update DPAA SDK to SDK 2.0

This adds some support for ARM as well as 64-bit. 64-bit on PowerPC is
currently not working, and ARM support has not been completed or tested on the
FreeBSD side.

As this was imported from a Linux tree, it includes some Linux-isms
(ioread/iowrite), so compile with the LinuxKPI for now. This may change in the
future.

Simplify the page tracking for VA<->PA translations.

Drop the tracking down to the pmap layer, with optimizations to only track
necessary pages. This should give a (slight) performance improvement, as well
as a stability improvement, as the tracking is already mostly handled by the
pmap layer.

Use proper integer-pointer type conversions.

As part of an effort to extend Book-E to the 64-bit world, make the necessary
changes to the DPAA/dTSEC driver set to be integer-pointer conversion clean.
This means no more casts to int, and use uintptr_t where needed.

Since the NCSW source is effectively obsolete, direct changes to the source tree
are safe.

Minor optimizations to dTSEC glue code

Don't call pmap_kextract() multiple times, it wastes CPU cycles, which in a high
performance environment can be very expensive.

Inline XX_FindTracker() to allow more optimizations as well.

Add support for the Freescale dTSEC DPAA-based ethernet controller.

Freescale's QorIQ line includes a new ethernet controller, based on their
Datapath Acceleration Architecture (DPAA). This uses a combination of a Frame
manager, Buffer manager, and Queue manager to improve performance across all
interfaces by being able to pass data directly between hardware acceleration
interfaces.

As part of this import, Freescale's Netcomm Software (ncsw) driver is imported.
This was an attempt by Freescale to create an OS-agnostic sub-driver for
managing the hardware, using shims to interface to the OS-specific APIs. This
work was abandoned, and Freescale's primary work is in the Linux driver (dual
BSD/GPL license). Hence, this was imported directly to sys/contrib, rather than
going through the vendor area. Going forward, FreeBSD-specific changes may be
made to the ncsw code, diverging from the upstream in potentially incompatible
ways. An alternative could be to import the Linux driver itself, using the
linuxKPI layer, as that would maintain parity with the vendor-maintained driver.
However, the Linux driver has not been evaluated for reliability yet, and may
have issues with the import, whereas the ncsw-based driver in this commit was
completed by Semihalf 4 years ago, and is very stable.

Other SoC modules based on DPAA, which could be added in the future:
* Security and Encryption engine (SEC4.x, SEC5.x)
* RAID engine

Additional work to be done:
* Implement polling mode
* Test vlan support
* Add support for the Pattern Matching Engine, which can do regular expression
matching on packets.

This driver has been tested on the P5020 QorIQ SoC. Others listed in the
dtsec(4) manual page are expected to work as the same DPAA engine is included in
all.

Obtained from: Semihalf
Relnotes: Yes
Sponsored by: Alex Perez/Inertial Computing