Revert "usb: gadget: allow to enable legacy drivers without USB_ETH"

[Felipe Balbi <felipe.balbi@linux.intel.com>]

Hi,

Bart Van Assche <bart.vanassche@wdc.com> writes:
> Romain Izard reported the following about commit 7a9618a22aad:
>
>     As it reached Linus' tree with v4.15-rc3, I recently noticed the
>     following commit that triggered a Kconfig request. I believe that this
>     change does not make sense.
>
>     7a9618a22aa usb: gadget: allow to enable legacy drivers without USB_ETH
>
>     USB_ETH was not a dependency, but a default value for the choice. As the
>     choice was marked as "optional", it was possible to remove this value
>     when building.
>
>     After this modification, the Kconfig choice option does not contain
>     anything anymore, so it is useless.  It is also possible to select
>     multiple built-in legacy drivers. This builds, but will not work as
>     expected as only one legacy driver can be bound to an USB device
>     controller at a time.
>
> Hence revert commit 7a9618a22aad.
>
> Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
> Cc: Romain Izard <romain.izard.pro@gmail.com>
> Cc: Arnd Bergmann <arnd@arndb.de>
> Cc: Stephen Rothwell <sfr@canb.auug.org.au>
> Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
> Cc: Hannes Reinecke <hare@suse.com>
> Cc: Nicholas Bellinger <nab@linux-iscsi.org>
> Cc: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
> Cc: linux-usb@vger.kernel.org
> Cc: Felipe Balbi <felipe.balbi@linux.intel.com>

this doesn't apply at all. Patch is not properly formatted.