staging: mt7621-mmc: Remove unused field dat_drv from msdc_hw

The field dat_drv of msdc_hw is set to a constant and only used once,
replace that position with the constant and remove the unused field.
Signed-off-by: NChristian Lütke-Stetzkamp <christian@lkamp.de>
Reviewed-by: NNeilBrown <neil@brown.name>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/mt7621-mmc/board.h

@@ -56,7 +56,6 @@ struct msdc_hw {
 	unsigned char  clk_src;          /* host clock source */
 	unsigned char  clk_drv;          /* clock pad driving */
 	unsigned char  cmd_drv;          /* command pad driving */
-	unsigned char  dat_drv;          /* data pad driving */
 	unsigned long  flags;            /* hardware capability flags */
 
 	/* config gpio pull mode */

drivers/staging/mt7621-mmc/sd.c

@@ -179,7 +179,6 @@ struct msdc_hw msdc0_hw = {
 	.clk_src        = 0,
 	.clk_drv        = 4,
 	.cmd_drv        = 4,
-	.dat_drv        = 4,
 	.flags          = MSDC_CD_PIN_EN | MSDC_REMOVABLE,
 //	.flags          = MSDC_WP_PIN_EN | MSDC_CD_PIN_EN | MSDC_REMOVABLE,
 };
@@ -2447,8 +2446,8 @@ static void msdc_init_hw(struct msdc_host *host)
 	sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKDRVP, hw->clk_drv);
 	sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDDRVN, hw->cmd_drv);
 	sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDDRVP, hw->cmd_drv);
-	sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATDRVN, hw->dat_drv);
-	sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATDRVP, hw->dat_drv);
+	sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATDRVN, 4);
+	sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATDRVP, 4);
 #else
 	sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKDRVN, 0);
 	sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKDRVP, 0);