mfd: rave-sp: Convert print_hex_dump() to print_hex_dump_debug()

Convert print_hex_dump() to print_hex_dump_debug() to be able to
leverage CONFIG_DYNAMIC_DEBUG.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/mfd/rave-sp.c

@@ -309,8 +309,8 @@ static int rave_sp_write(struct rave_sp *sp, const u8 *data, u8 data_size)
 
 	length = dest - frame;
 
-	print_hex_dump(KERN_DEBUG, "rave-sp tx: ", DUMP_PREFIX_NONE,
-		       16, 1, frame, length, false);
+	print_hex_dump_debug("rave-sp tx: ", DUMP_PREFIX_NONE,
+			     16, 1, frame, length, false);
 
 	return serdev_device_write(sp->serdev, frame, length, HZ);
 }
@@ -451,8 +451,8 @@ static void rave_sp_receive_frame(struct rave_sp *sp,
 	struct device *dev           = &sp->serdev->dev;
 	u8 crc_calculated[checksum_length];
 
-	print_hex_dump(KERN_DEBUG, "rave-sp rx: ", DUMP_PREFIX_NONE,
-		       16, 1, data, length, false);
+	print_hex_dump_debug("rave-sp rx: ", DUMP_PREFIX_NONE,
+			     16, 1, data, length, false);
 
 	if (unlikely(length <= checksum_length)) {
 		dev_warn(dev, "Dropping short frame\n");