lib: remove handled option arguments from argv

Remove options from argv that have been handled by getopt to allow
additional non-option parameters to be processed in the test application.

This fixes issues when using options such as --debug with tests that accept
additional non-option parameters.

Signed-off-by: Thomas Wood <thomas.wood@intel.com>

tests/gem_ctx_basic.c

@@ -144,7 +144,7 @@ int main(int argc, char *argv[])
 {
 	int i;
 
-	igt_simple_init_parse_opts(argc, argv, "i:c:n:mu", NULL, NULL,
+	igt_simple_init_parse_opts(&argc, argv, "i:c:n:mu", NULL, NULL,
 				   opt_handler);
 
 	fd = drm_open_any_render();