staging: rts5208: rename mmc_ddr_tunning_rx_cmd to mmc_ddr_tuning_rx_cmd

Trival fix to spelling mistake in function name
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rts5208/sd.c

@@ -1654,7 +1654,7 @@ static int sd_ddr_tuning_rx_cmd(struct rtsx_chip *chip, u8 sample_point)
 	return STATUS_SUCCESS;
 }
 
-static int mmc_ddr_tunning_rx_cmd(struct rtsx_chip *chip, u8 sample_point)
+static int mmc_ddr_tuning_rx_cmd(struct rtsx_chip *chip, u8 sample_point)
 {
 	struct sd_info *sd_card = &chip->sd_card;
 	int retval;
@@ -1933,7 +1933,7 @@ static int sd_tuning_rx(struct rtsx_chip *chip)
 
 	} else {
 		if (CHK_MMC_DDR52(sd_card)) {
-			tuning_cmd = mmc_ddr_tunning_rx_cmd;
+			tuning_cmd = mmc_ddr_tuning_rx_cmd;
 		} else {
 			rtsx_trace(chip);
 			return STATUS_FAIL;