avr32: Minor pm_power_off cleanup
avr32: Minor pm_power_off cleanup

Include <linux/pm.h> to see the declaration of pm_power_off, and remove
unneeded NULL initializer.

Signed-off-by: Haavard Skinnemoen <af8c0cf3411930951fa86926b241df32af99fdb9@atmel.com>

TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas