Complete migration of MTDPARTS_DEFAULT / MTDIDS_DEFAULT, include in environment

- Ensure that everyone setting mtdids= and mtdparts= is doing so via the
  CONFIG options.
- If the CONFIG options are set, ensure that the default environment
  sets mtdparts / mtdids.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/nsa310s_defconfig b/configs/nsa310s_defconfig
index 0c1d808..2b39ae7 100644
--- a/configs/nsa310s_defconfig
+++ b/configs/nsa310s_defconfig
@@ -39,6 +39,7 @@
 CONFIG_CMD_FS_GENERIC=y
 CONFIG_CMD_JFFS2=y
 CONFIG_CMD_MTDPARTS=y
+CONFIG_MTDIDS_DEFAULT="nand0=orion_nand"
 CONFIG_MTDPARTS_DEFAULT="mtdparts=orion_nand:0xe0000@0x0(uboot),0x20000@0xe0000(uboot_env),0x100000@0x100000(second_stage_uboot),-@0x200000(root)"
 CONFIG_CMD_UBI=y
 CONFIG_ISO_PARTITION=y