target: msm8916: Add support to get the HLOS subtype.
target: msm8916: Add support to get the HLOS subtype.

Add support to return the HLOS subtype of the device
based on the DDR size.

CRs-Fixed: 696087
Change-Id: I2d667092d02ed948cd047ffa408a37bbbd8d2132

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