platform: msm_shared: check for atags address
platform: msm_shared: check for atags address

verifying the atags address overlap with aboot addresses in case of
dtb is appended with the kernel.

CRs-Fixed: 681965
Change-Id: Iba14976d07d7f287c1e8f13762f20c4283eef4d2

Foxda-Tech/argo8-bootable-bootloader-lk,Foxda-Tech/argo8-bootable-bootloader-lk,jsr-d10/android_bootable_bootloader_lk,jsr-d10/android_bootable_bootloader_lk,jsr-d10/android_bootable_bootloader_lk,Foxda-Tech/argo8-bootable-bootloader-lk,jsr-d10/android_bootable_bootloader_lk,Foxda-Tech/argo8-bootable-bootloader-lk,Foxda-Tech/argo8-bootable-bootloader-lk,jsr-d10/android_bootable_bootloader_lk