target: msm8610: Add shutdown_device support
target: msm8610: Add shutdown_device support

Configure PMIC and drop PS_HOLD for device shutdown.

CRs-Fixed: 646440
Change-Id: Ic5092def184665120d98b05b77c33f1bb2302e7d

lg-devs/g2-bootloader,t2m-foxfone/android_kernel_lk,mozilla-b2g/fairphone2_kernel_lk,mozilla-b2g/fairphone2_kernel_lk,t2m-foxfone/android_kernel_lk,lg-devs/g2-bootloader,t2m-foxfone/android_kernel_lk,lg-devs/g2-bootloader,mozilla-b2g/fairphone2_kernel_lk,lg-devs/g2-bootloader,mozilla-b2g/fairphone2_kernel_lk,mozilla-b2g/fairphone2_kernel_lk,lg-devs/g2-bootloader,t2m-foxfone/android_kernel_lk,t2m-foxfone/android_kernel_lk