r600g: don't suspend timer queries for u_blitter

r600g: don't suspend timer queries for u_blitter

Timer queries should be able to measure the time spent in u_blitter as well.

Queries are split into two groups: the timer ones and the others (streamout,
occlusion), because we should only suspend non-timer queries for u_blitter,
and later if the non-timer queries are suspended, the context flush should
only suspend and resume the timer queries.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>