MFC r306262, r306267, r310021: (needed to avoid conflicts on later merges)

Remove bus_dma_get_range and bus_dma_get_range_nb on armv6. We only need
this on a few earlier arm SoCs.

Restrict where we need to define fdt_fixup_table to just PowerPC and
Marvell.

Add the missing void to function signatures in much of the arm code.

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

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

Rename ARM_INTRNG and MIPS_INTRNG to INTRNG. This will help with machine
independent code that needs to know about INTRNG such as PCI drivers.

Obtained from: ABT Systems Ltd
Sponsored by: The FreeBSD Foundation

Update of the Allwinner drivers to:
* Use the Linux compat string
* Use EARLY_DRIVER_MODULE to attach at the right time
* Add a generic A10 kernel config file
* A20 now use generic_timer
* Add two new dts files for Olimex boards
* Update our custom DTS file for A10 and A20 to use the same compatible
property names as the vendor ones.

Submitted by: Emmanuel Vadot <manu@bidouilliste.com>
Differential Revision: https://reviews.freebsd.org/D4792

Update the Allwinner kernels:
* Use the ARM PLATFORM framework
* Use ARM_INTRNG on teh A20 as it has a GICv2
* Add a method to find which Allwinner SoC we are running on

Differential Revision: https://reviews.freebsd.org/D5059

Stop using machine/fdt.h in the arm kernel code when we don't need it.

Switch to my freebsd.org emal address in copyright.

Approved by: stas (mentor)

Move all the files named foo/common.c to foo/foo_common.c, as
appropriate for each of the 'foo' in the tree. This will allow us to
compile them together (although symbol conflicts prevent us from doing
that today, this just fixes the file name collision).

Bring initial support for Allwinner A20 SoC (Cubieboard2).
Add support for A20 timer.
Correct interrupt offset depending from chip.
Add basic code for CPU configuration module.
For now, add kernel config and dts file
(only FDT blob related problem needs to be solved later in
order to have one kernel for both cubieboard1 and 2).

Approved by: ray@

Fix method of naming compatible string to follow
"<manufacturer>,<model>" as described in
http://www.devicetree.org/Device_Tree_Usage

Reviewed by: andrew@
Approved by: gonzo@

Fix formatting of license according to share/examples/etc/bsd-style-copyright

Reviewed by: joel

Fix license to follow standard license template

Reviewed by: joel

Initial support for Allwinner A10 SoC (Cubieboard)
Add simple console driver
Add interrupt handling and timer codes
Add kernel config file
Add dts file
Approved by: gonzo