Fix the usage info from:
part part uuid <interface> <dev>:<part>
to
part uuid <interface> <dev>:<part>
Signed-off-by: Maxin B. John <maxin.john@enea.com>
Reviewed-By: Sjoerd Simons <sjoerd.simons@collabora.co.uk
 U_BOOT_CMD(
        part,   CONFIG_SYS_MAXARGS,     1,      do_part,
        "disk partition related commands",
-       "part uuid <interface> <dev>:<part>\n"
+       "uuid <interface> <dev>:<part>\n"
        "    - print partition UUID\n"
        "part uuid <interface> <dev>:<part> <varname>\n"
        "    - set environment variable to partition UUID\n"