fastboot: rockchip: Fix rk3328 default mmc device

Technically the default mmc device for fastboot would
use eMMC if the board support for it.

Rockchip platform access device 0 for eMMC so, use the
same device number for rk3328.
Signed-off-by: NJagan Teki <jagan@amarulasolutions.com>
Reviewed-by: NKever Yang <kever.yang@rock-chips.com>

drivers/fastboot/Kconfig

@@ -89,7 +89,6 @@ endchoice
 config FASTBOOT_FLASH_MMC_DEV
 	int "Define FASTBOOT MMC FLASH default device"
 	depends on FASTBOOT_FLASH_MMC
-	default 1 if ROCKCHIP_RK3328
 	default 0 if ARCH_ROCKCHIP
 	default 0 if ARCH_SUNXI && MMC_SUNXI_SLOT_EXTRA = -1
 	default 1 if ARCH_SUNXI && MMC_SUNXI_SLOT_EXTRA != -1