FASTBOOT: Fix definition of "fastboot" command

The U_BOOT_CMD define for the "fastboot" command had a couple of
problems.  It allowed for a parameter which the code did nothing
with and the help would be formatted weird.

Change-Id: Ib4529bd895380069e7b616a7322df03d8ac5ce17
Signed-off-by: Scott Anderson <saa@google.com>
1 file changed