ARM: sunxi: Add support for Allwinner SUNXi SoCs sata to ahci_platform

This patch adds support for the ahci sata controler found on Allwinner A10
and A20 SoCs to the ahci_platform driver.

Orignally written by Olliver Schinagl using the approach of having a platform
device which probe method creates a new child platform device which gets
driven by ahci_platform.c, as done by ahci_imx.c .

Refactored by Hans de Goede to add most of the non sunxi specific functionality
to ahci_platform.c and use a platform_data pointer from of_device_id for the
sunxi specific bits.

Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
ahci-imx: Port to library-ised ahci_platform

This avoids the ugliness of creating a nested platform device from probe.

While moving it around anyways, move the mk6q phy init code from probe
to imx_sata_enable, as the phy needs to be re-initialized on resume too,
otherwise the drive won't be recognized after resume.

Tested on a wandboard i.mx6 quad.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
ARM: sun4i: dts: Add ahci / sata support

This patch adds sunxi sata support to A10 boards that have such a connector.
Some boards also feature a regulator via a GPIO and support for this is also
added.

Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
ARM: sun7i: dts: Add ahci / sata support

This patch adds sunxi sata support to A20 boards that have such a connector.
Some boards also feature a regulator via a GPIO and support for this is also
added.

Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>