configs: socfpga: add imply pl310 cache controller

Select the PL310 UCLASS_CACHE driver for SoCFPGA.

Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 49f01f1f..5be959b 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -847,6 +847,7 @@
 	imply SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE
 	imply SPL_SPI_FLASH_SUPPORT
 	imply SPL_SPI_SUPPORT
+	imply L2X0_CACHE
 
 config ARCH_SUNXI
 	bool "Support sunxi (Allwinner) SoCs"