spi: sh-msiof: Typo in comment s/tx/rx/

Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c
index 21ac8f6..5eded24 100644
--- a/drivers/spi/spi-sh-msiof.c
+++ b/drivers/spi/spi-sh-msiof.c
@@ -487,7 +487,7 @@
 	/* clear status bits */
 	sh_msiof_reset_str(p);
 
-	/* shut down frame, tx/tx and clock signals */
+	/* shut down frame, rx/tx and clock signals */
 	ret = sh_msiof_modify_ctr_wait(p, CTR_TFSE, 0);
 	ret = ret ? ret : sh_msiof_modify_ctr_wait(p, CTR_TXE, 0);
 	if (rx_buf)