arm: socfpga: imply SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION

Using imply for SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION instead of
select ensures we can build without partition support (used to build
a network boot only version of SPL and U-Boot).

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arch/arm/Kconfig

@@ -807,7 +807,6 @@ config ARCH_SOCFPGA
 	select SPL_SPI_SUPPORT if DM_SPI
 	select SPL_WATCHDOG_SUPPORT
 	select SUPPORT_SPL
-	select SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE
 	select SYS_NS16550
 	select SYS_THUMB_BUILD if TARGET_SOCFPGA_GEN5 || TARGET_SOCFPGA_ARRIA10
 	imply CMD_DM
@@ -817,6 +816,7 @@ config ARCH_SOCFPGA
 	imply DM_SPI_FLASH
 	imply FAT_WRITE
 	imply SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION
+	imply SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE
 
 config ARCH_SUNXI
 	bool "Support sunxi (Allwinner) SoCs"