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_date.c b/common/cmd_date.c
index 93c2ca4..4a42534 100644
--- a/common/cmd_date.c
+++ b/common/cmd_date.c
@@ -211,4 +211,4 @@
 	"  - with 'reset' argument: reset the RTC\n"
 );
 
-#endif	/* CFG_CMD_DATE */
+#endif