[OE-core] [PATCH] gtk-doc: Ensure we run gtkdocize else we could see build failures (e.g. evolution-data-server)

[Richard Purdie]

This is a fix to Ross' series, we need to run gtkdocize in case anything
was built from source control and the appropriate files are missing.

Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
---
diff --git a/meta/classes/gtk-doc.bbclass b/meta/classes/gtk-doc.bbclass
index 603b191..8a312f5 100644
--- a/meta/classes/gtk-doc.bbclass
+++ b/meta/classes/gtk-doc.bbclass
@@ -14,3 +14,7 @@ EXTRA_OECONF_append = "\
   --disable-gtk-doc-html \
   --disable-gtk-doc-pdf \
 "
+
+do_configure_prepend () {
+	gtkdocize
+}