arm: socfpga: Always enable OF_CONTROL and SPL_OF_CONTROL

The SoCFPGA probes mostly from OF and the OF is mandatory both in
U-Boot itself and U-Boot SPL. Enable it by default.

Signed-off-by: Marek Vasut <marex@denx.de>

arch/arm/Kconfig

@@ -539,6 +539,8 @@ config ARCH_SOCFPGA
 	bool "Altera SOCFPGA family"
 	select CPU_V7
 	select SUPPORT_SPL
+	select OF_CONTROL
+	select SPL_OF_CONTROL
 	select DM
 	select DM_SPI_FLASH
 	select DM_SPI