bitbake/siggen: Ensure full signature data is not held unless needed, reducing memory consumption

Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>

bitbake/lib/bb/parse/__init__.py

@@ -80,8 +80,8 @@ def init(fn, data):
         if h['supports'](fn):
             return h['init'](data)
 
-def init_parser(d):
-    bb.parse.siggen = bb.siggen.init(d)
+def init_parser(d, dumpsigs):
+    bb.parse.siggen = bb.siggen.init(d, dumpsigs)
 
 def resolve_file(fn, d):
     if not os.path.isabs(fn):