ARM: pxa/z2: add poweroff function
ARM: pxa/z2: add poweroff function

Signed-off-by: Vasily Khoruzhick <2750baa0af9b656228a0c6ae55ea7df1c78e68de@gmail.com>
Signed-off-by: Eric Miao <60e376623d7bcedd53f4c51cbb2c060fb40a4887@gmail.com>

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