omap-for-v4.4/dt-pt1

Device tree changes for omaps for v4.4 merge window:

- DCAN sleep pins for am437x-gp-evm

- A series of changes to add audio support for dra7

- Add support for gpio keys and LEDs on dra7

- Regulator clean-up for am335x-wega

- A series of changes to enable IOMMUs and mailboxes for dra7
  accelerators

- Add support for am335x-bonegreen

- Fix up GPIO flags where 0 was used instead of GPIO_ACTIVE_HIGH

- Fix omap3-lilly-am33x IRQ level flag

- Remove duplicate uart2 pinmux for igep and fix indentation and
  update igep to use pinctrl macros for the register offsets

- Fix MMC cd-gpios usage

Note that this branch is against v4.3-rc4 as that contains critical
MMC related fixes to boot with MMC working on most omaps.
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