lib: Add argc/argv to igt_simple_init

There's a pile of ideas around to add generally useful options like
--debug to all igt tests. Or unify the runtime behaviour between
simple and subtest tests a bit more.

The first step to get there is to add argc/argv to igt_simple_init so
that we can get at the argument list.

Cc: Tim Gore <tim.gore@intel.com>
Cc: Thomas Wood <thomas.wood@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

tests/gem_ctx_basic.c

@@ -149,7 +149,7 @@ int main(int argc, char *argv[])
 {
 	int i;
 
-	igt_simple_init();
+	igt_simple_init(argc, argv);
 
 	fd = drm_open_any_render();
 	devid = intel_get_drm_devid(fd);