sca: skip nopackages recipes

but only if they aren't images.
This adapts to the latest upstream change
that injects nopackages through sdk_base into
all images

Signed-off-by: Konrad Weihmann <kweihmann@outlook.com>

classes/sca.bbclass

@@ -68,7 +68,7 @@ python sca_invoke_handler() {
         bb.debug(2, "Skip {} because of being a packagegroup, can't run SCA here".format(d.getVar("PN")))
         sca_mask_vars(d)
         return
-    if bb.data.inherits_class('nopackages', d):
+    if bb.data.inherits_class('nopackages', d) and not bb.data.inherits_class('image', d):
         bb.debug(2, "Skip {} because of inheriting nopackages, can't run SCA here".format(d.getVar("PN")))
         sca_mask_vars(d)
         return