smdk4412-common: remove TARGET_SPECIFIC_HEADER_PATH

- no longer used

Change-Id: Id64f6f48bea69a3fe784b4f86db8b94ddb3c5c12
smdk4412-common: Enable home button wake setting && Remove unnecessary wallpaper overlay

Seriously, how did that wallpaper even get there.

Patch Set 2: Fix ub0r derp.

Change-Id: I51e0ee362a05ae61535e1530ef291da28861015a
smdk4412: add focal overlay

Change-Id: I9e2753ae335460615e024a8b21d2aa2053f90d00
hwui: Disable partial invalidations

The property to disable usage of dirty regions has changed, adjust
to the current one to fully disable them.

Change-Id: Iabe4d57a4f6ccd99ae7cae798c7dce76a02580cd
smdk4412: Use the USB audio HAL for external devices

 * I recently fixed several issues in the usbaudio HAL, making it able
   to handle arbitrary audio devices connected via OTG.
 * Point the dock outputs to the correct place in order to get audio.

 ** Due to a broken transaction translator in the USB hardware (yay
   Exynos4), you may need to connect certain devices thru a powered USB
   2.0 hub in order for them to work.

Change-Id: I326d257090a1b59293ccbacac26c106e72ce6ee7