write_uboot_platform: Fix a false shell message

config/sources/families/spacemit.conf

@@ -86,12 +86,12 @@ write_uboot_platform() {
 
 	for f in "${!d[@]}"
 	do
-		#echo "skip\seek=${d[$f]%:*} count=${d[$f]#*:}" # uncomment for debugging
 		if $(dd if=${device} bs=1 skip="${d[$f]%:*}" count="${d[$f]#*:}" \
-			conv=notrunc status=noxfer 2>/dev/null | cmp ${f})
+			conv=notrunc status=noxfer 2>/dev/null | cmp --quiet "${f}")
 		then
 			echo "Skip $(basename $f), it is equal to the existing one"
 		else
+			echo "# Write =: $(basename $f) to ${device}"
 			dd if=$f of=${device} bs=1 seek="${d[$f]%:*}" conv=notrunc status=noxfer
 			sync
 		fi