mmc: omap: improve stat wait message

The message didn't state that it's waiting for STAT to _clear_,
and printing the STAT value itself can help to identify problems.

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Acked-by: Tom Rini <trini@ti.com>

drivers/mmc/omap_hsmmc.c

@@ -215,7 +215,8 @@ static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
 	start = get_timer(0);
 	while (readl(&mmc_base->stat)) {
 		if (get_timer(0) - start > MAX_RETRY_MS) {
-			printf("%s: timedout waiting for stat!\n", __func__);
+			printf("%s: timedout waiting for STAT (%x) to clear\n",
+				__func__, readl(&mmc_base->stat));
 			return TIMEOUT;
 		}
 	}