Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

MFC r232518:

Respect phy-handle property in Ethernet nodes of the device tree.

This lets specify whereabouts of the parent PHY for a given MAC node
(and get rid of ugly kludges in mge(4) and tsec(4)).

Obtained from: Semihalf

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Convert Freescale PowerPC platforms to FDT convention.

The following systems are affected:

- MPC8555CDS
- MPC8572DS

This overhaul covers the following major changes:

- All integrated peripherals drivers for Freescale MPC85XX SoC, which are
currently in the FreeBSD source tree are reworked and adjusted so they
derive config data out of the device tree blob (instead of hard coded /
tabelarized values).

- This includes: LBC, PCI / PCI-Express, I2C, DS1553, OpenPIC, TSEC, SEC,
QUICC, UART, CFI.

- Thanks to the common FDT infrastrucutre (fdtbus, simplebus) we retire
ocpbus(4) driver, which was based on hard-coded config data.

Note that world for these platforms has to be built WITH_FDT.

Reviewed by: imp
Sponsored by: The FreeBSD Foundation

Fix Book-E/MPC85XX build. Some prototypes were wrong and got revealed with
the recent kobj signature checking.

tsec(4) style improvements and clean-up.

Additional features for the tsec(4) Ethernet driver.

- interrupt coalescing
- polling
- jumbo frames
- multicast
- VLAN tagging

The enhanced version of the chip (eTSEC) can also take advantage of:

- TCP/IP checksum calculation h/w offloading

Obtained from: Freescale, Semihalf

tsec: Refactor driver's structure.

Split the driver into the core functionality part (sys/dev/tsec/if_tsec.c) and
the bus attachment (sys/dev/tsec/if_tsec_ocp.c).

This lets better integrate and maintain the driver in other environments with
different attachment abstractions (there is at least one other FreeBSD port --
MPC83xx -- which uses this TSEC driver, but with different local bus model
i.e. some OF derivative). While there, clean up and fix minor cosmetics.

Obtained from: Semihalf

tsec: Improve and clean up callouts.

- eliminate the unused tsec_tick_ch callout
- adjust and fix the main tsec callout handling
- minor naming improvements

Obtained from: Semihalf

Convert TSEC watchdog to the new scheme.

Reviewed by: imp, marcel
Approved by: cognet (mentor)

Support for Freescale integrated Three-Speed Ethernet Controller (TSEC).

TSEC is the MAC engine offering 10, 100 or 1000 Mbps speed and is found on
different Freescale parts (MPC83xx, MPC85xx). Depending on the silicon version
there are up to four TSEC units integrated on the chip.

This driver also works with the enhanced version of the controller (eTSEC),
which is backwards compatible, but doesn't take advantage of its additional
features (various off-loading mechanisms) at the moment.

Approved by: cognet (mentor)
Obtained from: Semihalf
MFp4: e500