crypto: safexcel - Raise firmware load failure message to error

At the moment if there is no firmware available for the safexcel driver
it will fail to load with a cryptic:

crypto-safexcel f2800000.crypto: TRC init: 15360d,80a (48r,256h)
crypto-safexcel f2800000.crypto: HW init failed (-2)

Raise the logging level of the firmware load failure to err rather than
dbg so that it's obvious what the reason for the HW init failure is.

Signed-off-by: Jonathan McDowell <[e-mail]>
Reviewed-by: Antoine Tenart <[e-mail]>
Signed-off-by: Herbert Xu <[e-mail]>

drivers/crypto/inside-secure/safexcel.c

···
 		goto retry_fw;
 	}
 
-	dev_dbg(priv->dev, "Firmware load failed.\n");
+	dev_err(priv->dev, "Firmware load failed.\n");
 
 	return ret;
 }