kbuild: uapi: upgrade check_sizetypes() warning to error

No problematic type usages exist anymore.

Make sure it stays this way.

Signed-off-by: Thomas Weißschuh <[email protected]>
Reviewed-by: Nicolas Schier <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Nathan Chancellor <[email protected]>

usr/include/headers_check.pl

@@ -159,7 +159,6 @@ sub check_sizetypes
 		              "found __[us]{8,16,32,64} type " .
 		              "without #include <linux/types.h>\n";
 		$linux_types = 2;
-		# Warn until headers are all fixed
-		#$ret = 1;
+		$ret = 1;
 	}
 }