test: Add simple VP8 test

Simple test used with Broadwell and Baytrail platforms.

Signed-off-by: Li Zhong <zhong.li@intel.com>
Signed-off-by: Zhao Halley <halley.zhao@intel.com>
Signed-off-by: Sean V Kelley <sean.v.kelley@intel.com>
add VA_SURFACE_ATTRIB_USAGE_FORCE_TILING_ mode for VASurfaceAttribUsageHint
use void ** for buffers in VASurfaceAttributeTPI

it supports 64bits system as well
signed-off-by: Kibey Sameer<sameer.kibey@intel.com>

Change-Id: Ie10bac5c5b5a69cf0229db5b6094a485941850bc
API: add new VASurfaceAttribType for user specified strides

VASurfaceAttribHorizontalStride/VASurfaceAttribVerticalStride
Change-Id: Ie89f012929aafc19386407c61f3e6b891cee62e9