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: r234291, r234292

Add support for the Atmel SAM9XE family of microcontrollers, which
consist of a ARM926EJ-S processor core with up to 512 Kbytes of on-chip
flash. Tested with SAM9XE512.

MFC: r234281

- Try to bring these files closer to style(9).
- Use DEVMETHOD_END.
- Use NULL instead of 0 for pointers.

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

Approved by: re (implicit)

Fix double ;;

Add support for the AT91SAM9260

Submitted by: Greg Ansley

if_ate.c:

* Support for sam9 "EMAC" controller.
* Support for rmii interface to phy.

at91.c & at91sam9.c:

* Eliminate separate at91sam9.c file.
* Add new devices to at91sam9_devs table.

at91_machdep.c & at at91sam9_machdep.c:

* Automatic chip type determination.
* Remove compile time chip dependencies.
* Eliminate separate at91sam9_machdep.c file.

at91_pmc.c:

* Corrected support for all of the sam926? and sam9g20 chips.
* Remove compile time chip dependencies.

My apologies to Greg for taking so long to take care of it.

Import preliminary support for Atmel AT91SAM9G20 cpu, and the Hot-e HL201.
This fine work was done by Yohanes Nugroho <yohanes a gmail dot com>
Many thanks to John Nicholls and Thinlinx for providing sample hardware.

- Get rid of extra include file, erroneously added by the
previous commit. This include file was required by the
first version of the patch.

Approved by: kib (mentor, implicit)

- Obtain main clock frequency dynamically based on CKGR_MCFR register
contents.
- It is possible to override the dynamic configuration by using
AT91C_MAIN_CLOCK option in kernel config.

PR: arm/128961 (based on)
Submitted by: Bjorn Konig <bkoenig@alpha-tierchen.de>
Reviewed by: imp
Approved by: kib (mentor, implicit)

Tweak the disclaimer section of the license to match COPYRIGHT, for
better or worse. Ok'd by folks that have additional copyrights to the
files in cases where there's joint authorship.

Use the proper clock domain for the usb host controller.

Submitted by: Hans Petter Selasky

- Whitespace fixes.

Approved by: gonzo
MFC after: 1 week

Kill bogus printf debugs.

Approved by: re@ (blanket)

MFp4: BWCT boards are using an 16MHz xtal

The TSC board uses a 16MHz base clock for the AT91RM9200, while the Kwikbyte
board uses a 10MHz base clock. Cope with this difference.

improve reporting of clocks

Add the sekelton of support for the Power Management Controller.