x86: upgrade: use v function for writting logs

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

target/linux/x86/base-files/lib/upgrade/platform.sh

@@ -7,13 +7,13 @@ platform_check_image() {
 	case "$(get_magic_word "$1")" in
 		eb48|eb63) ;;
 		*)
-			echo "Invalid image type"
+			v "Invalid image type"
 			return 1
 		;;
 	esac
 
 	export_bootdevice && export_partdevice diskdev 0 || {
-		echo "Unable to determine upgrade device"
+		v "Unable to determine upgrade device"
 		return 1
 	}
 
@@ -30,7 +30,7 @@ platform_check_image() {
 	rm -f /tmp/image.bs /tmp/partmap.bootdisk /tmp/partmap.image
 
 	if [ -n "$diff" ]; then
-		echo "Partition layout has changed. Full image will be written."
+		v "Partition layout has changed. Full image will be written."
 		ask_bool 0 "Abort" && exit 1
 		return 0
 	fi
@@ -57,7 +57,7 @@ platform_do_bootloader_upgrade() {
 		echo "(hd0) /dev/$diskdev" > /tmp/device.map
 		part_magic_efi "/dev/$diskdev" && parttable=gpt
 
-		echo "Upgrading bootloader on /dev/$diskdev..."
+		v "Upgrading bootloader on /dev/$diskdev..."
 		grub-bios-setup \
 			-m "/tmp/device.map" \
 			-d "/tmp/boot/boot/grub" \
@@ -73,7 +73,7 @@ platform_do_upgrade() {
 	local diskdev partdev diff
 
 	export_bootdevice && export_partdevice diskdev 0 || {
-		echo "Unable to determine upgrade device"
+		v "Unable to determine upgrade device"
 		return 1
 	}
 
@@ -107,15 +107,15 @@ platform_do_upgrade() {
 	#iterate over each partition from the image and write it to the boot disk
 	while read part start size; do
 		if export_partdevice partdev $part; then
-			echo "Writing image to /dev/$partdev..."
+			v "Writing image to /dev/$partdev..."
 			get_image "$@" | dd of="/dev/$partdev" ibs=512 obs=1M skip="$start" count="$size" conv=fsync
 		else
-			echo "Unable to find partition $part device, skipped."
+			v "Unable to find partition $part device, skipped."
 		fi
 	done < /tmp/partmap.image
 
 	#copy partition uuid
-	echo "Writing new UUID to /dev/$diskdev..."
+	v "Writing new UUID to /dev/$diskdev..."
 	get_image "$@" | dd of="/dev/$diskdev" bs=1 skip=440 count=4 seek=440 conv=fsync
 
 	platform_do_bootloader_upgrade "$diskdev"