gallium: enable INTEL_PERFORMANCE_QUERY

gallium: enable INTEL_PERFORMANCE_QUERY

new state tracker APIs added for INTEL_performance_query
This extension is enabled if all vendor specific functions for it
exist.

v2: add st_cb_perfquery.* to the list of sources in Makefile
v3: minor code clean-up
v4: - add driver hooks for intel-performance-query apis
    - add PIPE level performance counter and type enums that
      match to OpenGL enums
    - do conversion of pipe_perf_counter_type and
      pipe_perf_counter_data_type enums to GL defines in state_tracker

Signed-off-by: Dongwon Kim <dongwon.kim@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>