Description: Add skeleton arm64 support, so that ubuntu-core can build.
Author: Adam Conrad <adconrad@ubuntu.com>

--- live-build-3.0~a57.orig/functions/defaults.sh
+++ live-build-3.0~a57/functions/defaults.sh
@@ -702,6 +702,10 @@ Set_defaults ()
 
 	# Setting linux flavour string
 	case "${LB_ARCHITECTURES}" in
+		arm64)
+			# Assume we'll have a generic kernel for arm64 some day:
+			LB_LINUX_FLAVOURS="${LB_LINUX_FLAVOURS:-generic}"
+			;;
 		armel)
 			case "${LB_MODE}" in
                                 ubuntu|kubuntu)