mtd: rawnand: omap_elm: reduce verbosity

In case of "uncorrectable ECC errors" the message is repeated several
times, slowing down the boot.
These changes reduce the verbosity showinf the message just once.

Signed-off-by: Pierluigi Passaro <pierluigi.p@variscite.com>

drivers/mtd/nand/raw/omap_elm.c

@@ -114,7 +114,11 @@ int elm_check_error(u8 *syndrome, enum bch_level bch_type, u32 *error_count,
 	/* check if correctable */
 	location_status = readl(&elm_cfg->error_location[poly].location_status);
 	if (!(location_status & ELM_LOCATION_STATUS_ECC_CORRECTABLE_MASK)) {
-		printf("%s: uncorrectable ECC errors\n", DRIVER_NAME);
+		static int ecc_message_already_printed = 0;
+		if (!ecc_message_already_printed) {
+			printf("%s: uncorrectable ECC errors\n", DRIVER_NAME);
+			ecc_message_already_printed ++;
+		}
 		return -EBADMSG;
 	}