ARM: dts: at91: sama5d27_som1_ek: remove pull-up on SD/MMC lines

As the board have the proper pull-ups soldered on the data
and CMD lines we don't need them specified in the PADs. So remove
the "bias-pull-up" property and set "bias-disable".
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
[claudiu.beznea@microchip.com: change subject to match the desired prefix]
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

arch/arm/boot/dts/at91-sama5d27_som1_ek.dts

@@ -346,7 +346,7 @@ cmd_data {
 							 <PIN_PA7__SDMMC0_DAT5>,
 							 <PIN_PA8__SDMMC0_DAT6>,
 							 <PIN_PA9__SDMMC0_DAT7>;
-						bias-pull-up;
+						bias-disable;
 					};
 
 					ck_cd_vddsel {
@@ -364,7 +364,7 @@ cmd_data {
 							 <PIN_PA19__SDMMC1_DAT1>,
 							 <PIN_PA20__SDMMC1_DAT2>,
 							 <PIN_PA21__SDMMC1_DAT3>;
-						bias-pull-up;
+						bias-disable;
 					};
 
 					conf-ck_cd {