SF: Block gpu rendering for virtual display widevine level3

In MPD3 we are using the widevine level3 for secure content
display. And this should applicable only for primary display
not for screen shot or screen recording.

CRs-Fixed: 595469
Change-Id: I99be2d81287ab746d5c4a2375c3106c59e61a8fc
gui: Allow devices to disable fence sync

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

Change-Id: Ifecc7af579bfde9d0a7daaaf528ea0773ce6ceb2
DisplayDevice: Backwards compatibility with old EGL

From 4.1 to 4.2, the display subsystem was reworked to
use SurfaceTextureClient/BufferQueue instead of
FramebufferNativeWindow for the framebuffer itself.

Unfortunately, some legacy EGL libraries make assumptions
that any framebuffer device will be FramebufferNativeWindow.

These EGL libraries will fail when used in 4.2 as if the
framebuffer is not FramebufferNativeWindow, they will
try to dequeue more than one buffer at a time, which
will cause a hang of the graphics subsystem.

This allows use of FramebufferNativeWindow to keep
legacy EGL implementations happy.  Confirmed EGL
implementations that need this include but are
not limited to:

Set BOARD_EGL_NEEDS_FNW to use

Tegra2/3 ICS EGL
Mali400 ICS EGL (Allwinner A10)
Mali400 Jellybean (4.1) EGL (Samsung Exynos4)
Adreno Jellybean (4.1) EGL (legacy qcom devices using PMEM)

Original implementation by OndraOrg of XDA:
http://forum.xda-developers.com/showpost.php?p=34469675&postcount=19

Change-Id: If7c455035a002f272fa1a8af1cfcc60eb7ade894