sf: Determine if virtual display can use HWC for composition

For HWC virtual display using V4L2 approach:
1. HWC virtual display implementation doesn't send output buffer
   back to Surface Flinger.
2. For non-wfd virtual displays(e.g. Simulated Secondary Displays,
   Screen Record, CTS etc..), configure VDS to use GPU for
   composition on output/sink buffer.
3. For wfd virtual display (a.k.a hybrid wfd), use
   Framebuffer surface (similar to external display mechanism).

For HWC virtual display using VDS approach:
1. HWC is allocated for first virtual display connection.
2. Subsequent virtual display sessions will be composed by GLES driver.
ToDo: Modify VDS component to allocate hwcDisplayId based on
mForceHwcCopy (which is based on Usage Flags)

Change-Id: Ib7d2c00ca5fa07908b2eac8085654f8d2cd9af0b
Revert swaprect feature for new upstream implementation.

Revert "Display: Define new composition type for blit composition"

This reverts commit 835f0ad6da60ad5cd5f8d6d872c5665aae6f5584.

Revert "surfaceflinger: Conditional compilation for swaprect feature"

This reverts commit 5e9e33ac72e608d584b13bea176f8fc7f30d88e7.

Conflicts:
	services/surfaceflinger/DisplayHardware/HWComposer.h

Change-Id: I83e3b5a66b9ea7c3bae008d6a7e84c1358c512bc

Revert "SF: Add flag for swaprect status in HAL"

This reverts commit 4fd75c0a371d4ee04e0f583d790b576494257ea8.

Conflicts:
	services/surfaceflinger/DisplayHardware/HWComposer.cpp

Change-Id: Ibd8714a49e09653bf34da466db17fbe4b20c6c8d

Revert "sf: Enable swaprect optimization by default only on QCOMs"

This reverts commit 0438f810c7e8e3c53850874c7bdb74ac43b2ec88.

Revert "Display: Add swaprect feature for MDP composition."

This reverts commit 9b5ef3793b6012e979c10e4cc9a7e091092a4a57.

Conflicts:
	include/gui/Surface.h

Change-Id: I6d276ee82f8f0b4214e79c91cd9675fcbfd57dd4

Conflicts:
	include/gui/Surface.h
frameworks/native: Propagate dirty region in hwc_layer

This change propagates dirty rect value of each layer down to HWC
in hwc_layer structure.

Change-Id: I91d87facf4a321b92539de5353faf09b553d4919
SF: Add known programs to cache.

First open/close application after boot creates
shaders and compiles them we can cache these
programs at initialization, to avoid CPU work
at open/close application and JANK in SF.

CRs-Fixed: 615960

Change-Id: I4837e83941db903e84f195aa052e9e9dab6ff81e