mtd: rawnand: brcmnand: update log level messages

Update log level messages so that more critical messages can be logged
to console and help the troubleshooting with field devices.
Signed-off-by: David Regan <dregan@broadcom.com>
Signed-off-by: William Zhang <william.zhang@broadcom.com>
Reviewed-by: William Zhang <william.zhang@broadcom.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20240223034758.13753-4-william.zhang@broadcom.com

drivers/mtd/nand/raw/brcmnand/brcmnand.c

@@ -1084,7 +1084,7 @@ static int bcmnand_ctrl_poll_status(struct brcmnand_host *host,
 	if ((val & mask) == expected_val)
 		return 0;
 
-	dev_warn(ctrl->dev, "timeout on status poll (expected %x got %x)\n",
+	dev_err(ctrl->dev, "timeout on status poll (expected %x got %x)\n",
 		expected_val, val & mask);
 
 	return -ETIMEDOUT;
@@ -2137,7 +2137,7 @@ static int brcmnand_read(struct mtd_info *mtd, struct nand_chip *chip,
 				return err;
 		}
 
-		dev_dbg(ctrl->dev, "uncorrectable error at 0x%llx\n",
+		dev_err(ctrl->dev, "uncorrectable error at 0x%llx\n",
 			(unsigned long long)err_addr);
 		mtd->ecc_stats.failed++;
 		/* NAND layer expects zero on ECC errors */