Add framebuffer HAL implementation based on drm_framebuffer (v4)

Add framebuffer HAL implementation based on drm_framebuffer (v4)

(v1) original lambdadroid implementation

(v2) changes in drv.h due to following commits:
     48b4c08 ("minigbm: fix flags to align with GBM")
     6e6dc49 ("minigbm: virtio: restrict formats supported without 3D")

(v3) changes in drv.h due to aosp master branch minigbm implementation

NOTE: #define BO_USE_FRAMEBUFFER (1ull << 19) as the fist available bit

(v4) changes due to aosp updates in cros_gralloc_handle.h, drv.h, drv_priv.h

Change-Id: I1e1192a25ba1105c0230eb63ea50d31115afb6f2