Change 'repeatable' attribute of some commands to sensible values.

Most prominently this changes 'erase' to be non-repeatable.

Signed-off-by: Detlev Zundel <dzu@denx.de>
diff --git a/common/cmd_pcmcia.c b/common/cmd_pcmcia.c
index 2eb5b26..b1a594f 100644
--- a/common/cmd_pcmcia.c
+++ b/common/cmd_pcmcia.c
@@ -87,7 +87,7 @@
 }
 
 U_BOOT_CMD(
-	pinit,	2,	1,	do_pinit,
+	pinit,	2,	0,	do_pinit,
 	"pinit   - PCMCIA sub-system\n",
 	"on  - power on PCMCIA socket\n"
 			"pinit off - power off PCMCIA socket\n"