radv: Backported fixes for mesa 20.3
I went through the list in Dylan's 20.3 status email and fixed up all the RADV and ACO commits so that they apply to 20.3.
The following are on Dylan's list but not part of this MR:
-
c40ea24ee0
radv: fix overflow when computing the SQTT buffer size -
5b5cd18853
radv: inhibit clock gating when tracing with SQTT -
f695957421
radv: move queue object to a common base object -
bd98fc39ae
radv: reset object base on recycled command buffers