Added a DTSI just in case a M4 Berry should be added at a
later date.
Removed usb1_vbus-supply = <®_usb_vbus>; from the &usbphy
node. In my testing this resolves the onboard WiFi over USB
issue that has been troubling the REV1.
Added REV2 related nodes: SDIO, Regulators, Etc ...
An SDIO / Bluetooth overlay will be added at a later date to
support the REV2.
Signed-off-by: Patrick Yavitz <pyavitz@gmail.com>
bc4b366a9c