arm: mvebu: turris_{omnia, mox}: enable MTD command

Now that the MTD subsystem properly supports OF partitions of a SPI NOR,
we can enable the MTD command and start using it instead of the
deprecated sf command.
Signed-off-by: NMarek Behún <marek.behun@nic.cz>
Cc: Stefan Roese <sr@denx.de>
Cc: Pali Rohár <pali@kernel.org>
Reviewed-by: NStefan Roese <sr@denx.de>

configs/turris_mox_defconfig

@@ -31,6 +31,7 @@ CONFIG_CMD_CLK=y
 CONFIG_CMD_GPIO=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_MMC=y
+CONFIG_CMD_MTD=y
 CONFIG_CMD_PCI=y
 CONFIG_CMD_SPI=y
 CONFIG_CMD_USB=y
@@ -60,12 +61,14 @@ CONFIG_MMC_SDHCI=y
 CONFIG_MMC_SDHCI_SDMA=y
 CONFIG_MMC_SDHCI_XENON=y
 CONFIG_MTD=y
+CONFIG_DM_MTD=y
 CONFIG_SF_DEFAULT_MODE=0
 CONFIG_SF_DEFAULT_SPEED=20000000
 CONFIG_SPI_FLASH_MACRONIX=y
 CONFIG_SPI_FLASH_SPANSION=y
 CONFIG_SPI_FLASH_STMICRO=y
 CONFIG_SPI_FLASH_WINBOND=y
+CONFIG_SPI_FLASH_MTD=y
 CONFIG_PHY_MARVELL=y
 CONFIG_PHY_GIGE=y
 CONFIG_MVNETA=y

configs/turris_omnia_defconfig

@@ -41,6 +41,7 @@ CONFIG_CMD_LZMADEC=y
 CONFIG_CMD_GPIO=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_MMC=y
+CONFIG_CMD_MTD=y
 CONFIG_CMD_PCI=y
 CONFIG_CMD_SATA=y
 CONFIG_CMD_SPI=y
@@ -65,8 +66,11 @@ CONFIG_AHCI_MVEBU=y
 CONFIG_DM_PCA953X=y
 CONFIG_MMC_SDHCI=y
 CONFIG_MMC_SDHCI_MV=y
+CONFIG_MTD=y
+CONFIG_DM_MTD=y
 CONFIG_SPI_FLASH_MACRONIX=y
 CONFIG_SPI_FLASH_SPANSION=y
+CONFIG_SPI_FLASH_MTD=y
 CONFIG_SF_DEFAULT_MODE=0x0
 CONFIG_SF_DEFAULT_SPEED=40000000
 CONFIG_PHY_MARVELL=y