target: Add weak apis to support panel auto detection
target: Add weak apis to support panel auto detection

Adding weak apis to ensure compilation on new
targets and defaulting the results to 0.

Change-Id: I86cca152a26d0ca6f24beb048ef076cd28d887f3

efidroid/lk,Foxda-Tech/argo8-bootable-bootloader-lk,M1cha/android_bootable_bootloader_lk,CanarySolutions/little-kernel,M1cha/lktris,detule/lk-g2-spr,CanarySolutions/little-kernel,M1cha/android_bootable_bootloader_lk,jsr-d10/android_bootable_bootloader_lk,detule/lk-g2-spr,efidroid/lk,jsr-d10/android_bootable_bootloader_lk,efidroid/lk,Foxda-Tech/polaris-bootable-bootloader-lk,jsr-d10/android_bootable_bootloader_lk,Foxda-Tech/argo8-bootable-bootloader-lk,Foxda-Tech/argo8-bootable-bootloader-lk,detule/lk-g2-spr,M1cha/lktris,detule/lk-g2-spr,CanarySolutions/little-kernel,efidroid/lk,detule/lk-g2-spr,Foxda-Tech/polaris-bootable-bootloader-lk,Foxda-Tech/polaris-bootable-bootloader-lk,efidroid/lk,Foxda-Tech/polaris-bootable-bootloader-lk,Foxda-Tech/polaris-bootable-bootloader-lk,M1cha/lktris,M1cha/android_bootable_bootloader_lk,M1cha/android_bootable_bootloader_lk,jsr-d10/android_bootable_bootloader_lk,CanarySolutions/little-kernel,M1cha/android_bootable_bootloader_lk,jsr-d10/android_bootable_bootloader_lk,Foxda-Tech/argo8-bootable-bootloader-lk,Foxda-Tech/argo8-bootable-bootloader-lk,M1cha/lktris,M1cha/lktris,M1cha/android_bootable_bootloader_lk,CanarySolutions/little-kernel