eeprom: at24: Improve confusing log message

Currently when binding to an spd EEPROM, the at24 drivers logs the
following message:

256 byte spd EEPROM, read-only, 0 bytes/write

The last part is confusing, as by definition you don't write to a
read-only EEPROM, plus "0 bytes/write" makes no sense whatsoever.

I propose to have a different message for read-only EEPROMs, which
does not include this last part.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>

drivers/misc/eeprom/at24.c

@@ -716,9 +716,12 @@ static int at24_probe(struct i2c_client *client)
 		return -ENODEV;
 	}
 
-	dev_info(dev, "%u byte %s EEPROM, %s, %u bytes/write\n",
-		 byte_len, client->name,
-		 writable ? "writable" : "read-only", at24->write_max);
+	if (writable)
+		dev_info(dev, "%u byte %s EEPROM, writable, %u bytes/write\n",
+			 byte_len, client->name, at24->write_max);
+	else
+		dev_info(dev, "%u byte %s EEPROM, read-only\n",
+			 byte_len, client->name);
 
 	return 0;
 }