usbgadget: Update command help text
- Do not use BAREBOX_CMD_HELP_OPT with an empty option to extend the
  previous option text. It confuses the rst converter
- Add a '\t' to the options to align the option help texts in the
  barebox command help

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
1 parent d4adaf8 commit eec0140e6cc061c46ad9abbfa2633f23d4ba8694
@Sascha Hauer Sascha Hauer authored on 10 Jan 2018
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commands/usbgadget.c