service: obey CFLAGS, LDFLAGS

(From OE-Core rev: 8a227125991951c1ddd44bec0b6243474ebc363a)

Signed-off-by: Christopher Larson <chris_larson@mentor.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta-skeleton/recipes-skeleton/service/service_0.1.bb

@@ -9,7 +9,7 @@ SRC_URI = "file://skeleton \
 	   "
 
 do_compile () {
-	${CC} ${WORKDIR}/skeleton_test.c -o ${WORKDIR}/skeleton-test
+	${CC} ${CFLAGS} ${LDFLAGS} ${WORKDIR}/skeleton_test.c -o ${WORKDIR}/skeleton-test
 }
 
 do_install () {