wrapper: another board needs the boot.scr to uEnv.txt wrapper

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>

mk_mmc.sh

@@ -1227,6 +1227,8 @@ populate_boot () {
 	fi
 
 	if [ "${conf_uboot_bootscript}" ] ; then
+		case "${conf_fdtfile}" in
+		imx6q-sabrelite.dtb)
 			cat > ${TEMPDIR}/bootscripts/loader.cmd <<-__EOF__
 				echo "${conf_uboot_bootscript} -> uEnv.txt wrapper..."
 				#boundarydevices.com uses disk over mmcdev
@@ -1242,6 +1244,8 @@ populate_boot () {
 			echo "-----------------------------"
 			mkimage -A arm -O linux -T script -C none -a 0 -e 0 -n "wrapper" -d ${TEMPDIR}/bootscripts/loader.cmd ${TEMPDIR}/disk/${conf_uboot_bootscript}
 			cp -v ${TEMPDIR}/disk/${conf_uboot_bootscript} ${TEMPDIR}/disk/backup/${conf_uboot_bootscript}
+			;;
+		esac
 	fi
 
 	echo "Copying uEnv.txt based boot scripts to Boot Partition"