gnu-config: Deal with "make clean" breakage

gnu-config can't cope with a "make clean" so disable that
newly enabled functionality.

(From OE-Core rev: 2b0e78267df0ad708a5c15871757ca0db178621f)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/gnu-config/gnu-config_git.bb

@@ -17,6 +17,11 @@ SRC_URI = "git://git.sv.gnu.org/config.git \
 
 S = "${WORKDIR}/git"
 
+# Disable default since make clean doesn't work
+do_configure () {
+	:
+}
+
 do_compile() {
 	:
 }