ARM: sun6i: Add the USB clocks to the DTSI

The USB clocks of the A31 seems to be parented to the 24MHz oscillator, and
handle the clocks for the USB phys and OHCI devices.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
ARM: sun6i: dt: Add support for the USB controllers

The A31 has two ECHI/OHCI controllers, and one OHCI-only phy-less controller.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
ARM: sunxi: dt: add APP4-EVB1 board support

The APP4 EVB1 development boards embeds an A31, together with some NAND, one SD
card slot, and one SDIO + UART WiFi and Bluetooth chip, a few I2C buses, USB,
and a LCD display.

Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
ARM: sunxi: dt: add PRCM clk and reset controller subdevices

Add DT definitions for PRCM (Power/Reset/Clock Management) clock and reset
controller subdevices.

Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
ARM: sunxi: dt: declare the r_pio pin controller for A31 SoC

The A31 SoC has a different pin controller for PL and PM banks.
Define this new controller in the device tree.

Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>