platform: msm_shared: Update dsi readback register name
platform: msm_shared: Update dsi readback register name

Update dsi readback address to reflect that it holds only the offset.

Change-Id: Icc6a278faf163da6129dff5b9317d17241d178ad

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