[U-Boot] Some tegra cleanups and Kconfig migrations

[Peter Robinson]

Tom or Tom,

Any chance we could get these reviewed and merged, mostly generic
cleanups so I don't think most of them are controversial.

Peter

On Sun, Sep 16, 2018 at 6:23 PM Peter Robinson <pbrobinson at gmail.com> wrote:
>
> The following patches are a few cleanups to dangling comments from Kconfig
> cleanups and migrations of SYS_I2C_TEGRA, USB_EHCI_TEGRA and TEGRA_KEYBOARD.
> There's also a couple of other minors fixes and cleanups as well.