[ARM] 4903/1: [AT91] SAM9/CAP9 system shutdown

Enable system shutdown/power-off on AT91SAM9 and AT91CAP9 based boards.
This does not require power-management to be enabled, and the
pm_power_off method can be overridden in board-specific files if
necessary.

Signed-off-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --cc arch/arm/mach-at91/at91cap9.c
Simple merge

diff --cc arch/arm/mach-at91/at91sam9260.c
Simple merge

diff --cc arch/arm/mach-at91/at91sam9261.c
Simple merge

diff --cc arch/arm/mach-at91/at91sam9263.c
Simple merge

diff --cc arch/arm/mach-at91/at91sam9rl.c
Simple merge