hwcomposer : Fix copybit render buffer fence usage.

Fixing array size to hold fence fd to count of render
buffers used in copybit, and use it to store
fence of corresponding render buffer at the index.

Change-Id: Ic5e7f264c2a81ded2a0f61ef138e59a093b0023a

Conflicts:
	libhwcomposer/hwc_copybit.cpp
libhwcomposer: Fence FD Count not handled for CACHED layer

- Fence FD count should not be incremented for CACHED layer

Change-Id: Ie6670bd44d2ff3ee180ee8413bf81154ee122c43
Donot compose layers if external is in pause state

* Donot compose external/virtual layer-list when
when external/virtual is in pause state.
* Marking the layers for GPU composition when external/virtual
is in pause state would update FB_TARGET layer which inturn would
affect partial mdpcomp after resume.

Change-Id: Id2806bd7156085c00158a31dff3c3dc4c2b61146
Merge "Donot compose layers if external is in pause state"
Merge "libhwcomposer: Fence FD Count not handled for CACHED layer"
Merge "hwcomposer : Fix copybit render buffer fence usage."
Merge remote-tracking branch 'caf/kk_2.7_rb1.17' into HEAD