lib/igt.cocci: Add stanza for for_each_pipe

Damien dodged this ...

Also run the script while at it.

v2: Don't just capture identifiers for pipe, but also expressions.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

tests/kms_fence_pin_leak.c

@@ -196,7 +196,7 @@ static void run_test(data_t *data)
 	enum pipe p;
 
 	for_each_connected_output(display, output) {
-		for (p = 0; p < igt_display_get_n_pipes(display); p++) {
+		for_each_pipe(display, p) {
 			if (run_single_test(data, p, output))
 				return; /* one time ought to be enough */
 		}