target: mpq8092: Do not fill board target info
target: mpq8092: Do not fill board target info

board.target property is filled as part of code which reads
platform info from smem, do not overwrite in target_detect code

Change-Id: Id45d47c72d18506867c7db199de7067b5a5fe379

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