UBUNTU: SAUCE: Makefile: replace rsync with tar

rsync has been removed from the i386 archives starting with lunar,
causing build errors when generating kernel packages for this
architecture.

Replace rsync with tar for now, until we decide to drop i386 completely.

Signed-off-by: Andrea Righi <andrea.righi@canonical.com>

Makefile

@@ -1281,8 +1281,9 @@ export INSTALL_HDR_PATH = $(objtree)/usr
 quiet_cmd_headers_install = INSTALL $(INSTALL_HDR_PATH)/include
       cmd_headers_install = \
 	mkdir -p $(INSTALL_HDR_PATH); \
-	rsync -mrl --include='*/' --include='*\.h' --exclude='*' \
-	usr/include $(INSTALL_HDR_PATH)
+	find usr/include -type f -name '*.h' -print0 | \
+	tar -czf - --null --no-recursion --no-wildcards-match-slash -T- | \
+	tar -xzf - --strip-components=1 -C $(INSTALL_HDR_PATH)
 
 PHONY += headers_install
 headers_install: headers