arm64: a37xx: add CONFIG_MTD_DEVICE and CONFIG_MTD_PARTITIONS

CONFIG_MTD_DEVICE is required for the mtdparts command and but it is missing from the mvebu_armada-37xx.h
CONFIG_MTD_PARTITIONS is needed for the ubi support. Some of the Marvell based devices may require this as well.

Signed-off-by: Vladimir Vid <vladimir.vid@sartura.hr>
Signed-off-by: Luka Perkov <luka.perkov@sartura.hr>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/include/configs/mvebu_armada-37xx.h b/include/configs/mvebu_armada-37xx.h
index d133109..5015bc7 100644
--- a/include/configs/mvebu_armada-37xx.h
+++ b/include/configs/mvebu_armada-37xx.h
@@ -66,6 +66,8 @@
 #define CONFIG_SF_DEFAULT_SPEED		1000000
 #define CONFIG_SF_DEFAULT_MODE		SPI_MODE_0
 #define CONFIG_ENV_SPI_MODE		CONFIG_SF_DEFAULT_MODE
+#define CONFIG_MTD_DEVICE		/* needed for mtdparts commands */
+#define CONFIG_MTD_PARTITIONS		/* required for UBI partition support */
 
 /* Environment in SPI NOR flash */
 #define CONFIG_ENV_OFFSET		0x180000 /* as Marvell U-Boot version */