target: msm8916: add subtype id for MSM8916 targets
target: msm8916: add subtype id for MSM8916 targets

It is necessary to identify the MSM8916 alpha devices.

Change-Id: Ie5a43ad33273dddb5213114d02a88cdf57927073

Foxda-Tech/polaris-bootable-bootloader-lk,M1cha/android_bootable_bootloader_lk,CanarySolutions/little-kernel,efidroid/lk,M1cha/lktris,efidroid/lk,CanarySolutions/little-kernel,efidroid/lk,CanarySolutions/little-kernel,efidroid/lk,M1cha/android_bootable_bootloader_lk,M1cha/android_bootable_bootloader_lk,M1cha/android_bootable_bootloader_lk,M1cha/lktris,M1cha/android_bootable_bootloader_lk,Foxda-Tech/polaris-bootable-bootloader-lk,efidroid/lk,CanarySolutions/little-kernel,M1cha/lktris,Foxda-Tech/polaris-bootable-bootloader-lk,M1cha/android_bootable_bootloader_lk,M1cha/lktris,M1cha/lktris,Foxda-Tech/polaris-bootable-bootloader-lk,Foxda-Tech/polaris-bootable-bootloader-lk,CanarySolutions/little-kernel