arm: socfpga: Enable DM and DM_SPI

Enable DM and DM_SPI support for both Cyclone 5 and Arria 5 boards,
since they use drivers which require those.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <clsee@opensource.altera.com>
Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
Acked-by: Pavel Machek <pavel@denx.de>
Acked-by: Simon Glass <sjg@chromium.org>
Acked-by: Stefan Roese <sr@denx.de>
Cc: Tom Rini <trini@konsulko.com>
Cc: Vince Bridgers <vbridger@opensource.altera.com>

configs/socfpga_arria5_defconfig

@@ -3,3 +3,6 @@ CONFIG_SPL=y
 +S:CONFIG_TARGET_SOCFPGA_ARRIA5=y
 CONFIG_OF_CONTROL=y
 CONFIG_DEFAULT_DEVICE_TREE="socfpga_arria5_socdk"
+CONFIG_DM=y
+CONFIG_DM_SPI=y
+CONFIG_DM_SPI_FLASH=y

configs/socfpga_cyclone5_defconfig

@@ -3,3 +3,6 @@ CONFIG_SPL=y
 +S:CONFIG_TARGET_SOCFPGA_CYCLONE5=y
 CONFIG_OF_CONTROL=y
 CONFIG_DEFAULT_DEVICE_TREE="socfpga_cyclone5_socdk"
+CONFIG_DM=y
+CONFIG_DM_SPI=y
+CONFIG_DM_SPI_FLASH=y