sunxi: Enable UBI and NAND support

Enable the NAND and UBI support in the configuration header so that we can
(finally) use it.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Jagan Teki <jagan@openedev.com>
diff --git a/cmd/Kconfig b/cmd/Kconfig
index 661bee2..85fe728 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -452,12 +452,14 @@
 
 config CMD_NAND
 	bool "nand"
+	default y if ARCH_SUNXI
 	help
 	  NAND support.
 
 if CMD_NAND
 config CMD_NAND_TRIMFFS
 	bool "nand write.trimffs"
+	default y if ARCH_SUNXI
 	help
 	  Allows one to skip empty pages when flashing something on a NAND.
 
@@ -845,6 +847,7 @@
 	tristate "Enable UBI - Unsorted block images commands"
 	select CRC32
 	select MTD_UBI
+	default y if ARCH_SUNXI
 	help
 	  UBI is a software layer above MTD layer which admits use of LVM-like
 	  logical volumes on top of MTD devices, hides some complexities of
@@ -858,6 +861,7 @@
 	select CRC32
 	select RBTREE if ARCH_SUNXI
 	select LZO if ARCH_SUNXI
+	default y if ARCH_SUNXI
 	help
 	  UBIFS is a file system for flash devices which works on top of UBI.