Enhance LIBVA_TRACE to dump SPS/PPS/ for VP8 encode.
Enhance LIBVA_TRACE to dump SPS/PPS/ for VP8 encode.

Enhance LIBVA_TRACE tool to dump VP8 encode related parameters based on the new libva interface.

Change-Id: I2c731761bb180061e18dac6b63d77572ca1abef6
Signed-off-by: Liu Bolun <bolun.liu@intel.com>
(cherry picked from commit bc49c42bcbfb24286c06b3e7cdb171b2a01c6f80)

Conflicts:

	va/va_trace.c

gbeauchesne/libva,gbeauchesne/libva,gbeauchesne/libva