Command usage cleanup

Remove command name from all command "usage" fields and update
common/command.c to display "name - usage" instead of
just "usage". Also remove newlines from command usage fields.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
diff --git a/board/esd/ocrtc/cmd_ocrtc.c b/board/esd/ocrtc/cmd_ocrtc.c
index f83dfe8..db2c548 100644
--- a/board/esd/ocrtc/cmd_ocrtc.c
+++ b/board/esd/ocrtc/cmd_ocrtc.c
@@ -54,7 +54,7 @@
 }
 U_BOOT_CMD(
 	setdevice,	1,	1,	do_setdevice,
-	"setdevice - Set device number on pci adapter boards\n",
+	"Set device number on pci adapter boards",
 	NULL
 );
 
@@ -77,7 +77,7 @@
 }
 U_BOOT_CMD(
 	getdevice,	1,	1,	do_getdevice,
-	"getdevice - Get device number and set slot env variable\n",
+	"Get device number and set slot env variable",
 	NULL
 );