mtd: ensure MTD/the raw NAND core are compiled when there is a NAND flash

Both symbols must be enabled when there is a raw NAND driver
selected. Also enable them when CONFIG_CMD_NAND is selected to avoid
breaking things when we'll further rework the MTD dependency
description.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
[trini: Rebase and migrate a few more boards here]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/harmony_defconfig b/configs/harmony_defconfig
index cf992b2..785c8bf 100644
--- a/configs/harmony_defconfig
+++ b/configs/harmony_defconfig
@@ -32,6 +32,7 @@
 CONFIG_ENV_IS_IN_NAND=y
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
 CONFIG_SPL_DM=y
+CONFIG_MTD=y
 CONFIG_DM_MTD=y
 CONFIG_MTD_UBI_FASTMAP=y
 CONFIG_PCI=y
@@ -55,3 +56,5 @@
 CONFIG_DM_VIDEO=y
 CONFIG_VIDEO_TEGRA20=y
 CONFIG_CONSOLE_SCROLL_LINES=10
+CONFIG_MTD=y
+CONFIG_MTD_RAW_NAND=y