common/: Remove lingering references to CFG_CMD_* symbols.

Fixed some broken instances of "#ifdef CMD_CFG_IDE" too.
Those always evaluated TRUE, and thus were always compiled
even when IDE really wasn't defined/wanted.

Signed-off-by: Jon Loeliger <jdl@freescale.com>
diff --git a/common/env_nand.c b/common/env_nand.c
index c8a80e0..38a07f8 100644
--- a/common/env_nand.c
+++ b/common/env_nand.c
@@ -42,7 +42,7 @@
 #if defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_NAND)
 #define CMD_SAVEENV
 #elif defined(CFG_ENV_OFFSET_REDUND)
-#error Cannot use CFG_ENV_OFFSET_REDUND without CFG_CMD_ENV & CFG_CMD_NAND
+#error Cannot use CFG_ENV_OFFSET_REDUND without CONFIG_CMD_ENV & CONFIG_CMD_NAND
 #endif
 
 #if defined(CFG_ENV_SIZE_REDUND) && (CFG_ENV_SIZE_REDUND != CFG_ENV_SIZE)