usb: phy: generic: Don't use regulator framework for RESET line

Modelling the RESET line as a regulator supply wasn't a good idea
as it kind of abuses the regulator framework and also makes adaptation
code more complex.

Instead, manage the RESET gpio line directly in the driver. Update
the device tree binding information.

This also makes us easy to migrate to a dedicated GPIO RESET controller
whenever it becomes available.

Signed-off-by: Roger Quadros <rogerq@ti.com>
ARM: OMAP2+: omap-usb-host: Get rid of platform_data from struct usbhs_phy_data

The platform data bits can be inferred from the other members of
struct usbhs_phy_data. So get rid of the platform_data member.

Build the platform data for the PHY device in usbhs_init_phys() instead.

Signed-off-by: Roger Quadros <rogerq@ti.com>
ARM: OMAP2+: usb-host: Adapt to USB phy-nop RESET line changes

The USB phy-nop nop driver expects the RESET line information
to be sent as a GPIO number via platform data. Adapt to that.

Signed-off-by: Roger Quadros <rogerq@ti.com>
ARM: dts: omap3-beagle: Use reset-gpios for hsusb2_reset

We no longer need to model the RESET line as a regulator since
the USB phy-nop driver accepts "reset-gpios" property.

Signed-off-by: Roger Quadros <rogerq@ti.com>
ARM: dts: omap4-panda: Use reset-gpios for hsusb1_reset

We no longer need to model the RESET line as a regulator since
the USB phy-nop driver accepts "reset-gpios" property.

Signed-off-by: Roger Quadros <rogerq@ti.com>
ARM: dts: omap5-uevm: Use reset-gpios for hsusb2_reset

We no longer need to model the RESET line as a regulator since
the USB phy-nop driver accepts "reset-gpios" property.

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 GPIO and Power regulator for the USB PHY,
the USB Host port mode and the PHY device for the controller.
Also provide pin multiplexer information for USB host pins.

We also relocate omap3_pmx_core pin definations so that they
are close to omap3_pmx_wkup pin definations.

Signed-off-by: Roger Quadros <rogerq@ti.com>
ARM: dts: omap3-beagle: Add USB OTG PHY details

Add information about the USB OTG PHY. Without this
the OTG port on beagle will not work.

Signed-off-by: Roger Quadros <rogerq@ti.com>