ARM: dts: omap4-panda: Add USB Host support

Provide the RESET and Power regulators for the USB PHY,
the USB Host port mode and the PHY device.

The USB PHY needs AUXCLK3 to operate. Provide this information
as well.

Also provide pin multiplexer information for the USB host
pins.

CC: Benoît Cousson <b-cousson@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
ARM: dts: omap3-beagle: Make USB host pin naming consistent

Use a common naming scheme "mode0name.modename flags" for the
USB host pins to be consistent.

Signed-off-by: Roger Quadros <rogerq@ti.com>
ARM: dts: omap3-beagle-xm: Add USB Host support

Provide RESET and Power regulators for the USB PHY,
the USB Host port mode and the PHY device.

Also provide pin multiplexer information for USB host
pins.

CC: Benoît Cousson <b-cousson@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
ARM: dts: omap3-beagle-xm: Add USB host supprot for Rev. Ax/Bx

Rev. Ax/Bx boards have reversed polarity for USBHOST_PWR_ENable
signal when compared to Rev. C boards.

We create a new dts file for Ax/Bx boards.

Also update model and compatible flags for Rev. C board.

CC: Benoît Cousson <b-cousson@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>