Support building pi3-arm64 core18 images. At the same time, make sure we still use the right gadget tree repository for the classic arm64 pi3 image.

debian/changelog

@@ -1,3 +1,11 @@
+livecd-rootfs (2.561) UNRELEASED; urgency=medium
+
+  * Support building pi3-arm64 core18 images. At the same time, make sure we
+    still use the right gadget tree repository for the classic arm64 pi3
+    image.
+
+ -- Łukasz 'sil2100' Zemczak <lukasz.zemczak@ubuntu.com>  Wed, 06 Feb 2019 18:07:06 +0100
+
 livecd-rootfs (2.560) disco; urgency=medium
 
   [ Colin Watson ]

live-build/auto/config

@@ -341,8 +341,10 @@ case $IMAGEFORMAT in
 				MODEL=dragonboard ;;
 			armhf+raspi2)
 				MODEL=pi2 ;;
-			armhf+raspi3|arm64+raspi3)
+			armhf+raspi3)
 				MODEL=pi3 ;;
+			arm64+raspi3)
+				MODEL=pi3-arm64 ;;
 			armhf+cm3)
 				MODEL=cm3 ;;
 			*)
@@ -379,6 +381,12 @@ case $IMAGEFORMAT in
 		else
 			# classic images
 
+			# Certain models have different names but are built from the same source gadget tree
+			case $MODEL in
+				pi3-arm64)
+					MODEL=pi3 ;;
+			esac
+
 			UBUNTU_IMAGE_ARGS=""
 			UBUNTU_IMAGE_ARGS="$UBUNTU_IMAGE_ARGS${PROPOSED:+ --with-proposed}"
 			UBUNTU_IMAGE_ARGS="$UBUNTU_IMAGE_ARGS${EXTRA_PPAS:+ --extra-ppas \"$EXTRA_PPAS\"}"