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/cmd_mem.c b/common/cmd_mem.c
index 001dfa2..a994211 100644
--- a/common/cmd_mem.c
+++ b/common/cmd_mem.c
@@ -1253,4 +1253,4 @@
 #endif /* CONFIG_MX_CYCLIC */
 
 #endif
-#endif	/* CFG_CMD_MEMORY */
+#endif