Add gfx90a target (#344)

* Add gfx90a target

* Support gfx90a topology

Co-authored-by: Eiden Yoshida <eiden.yoshida@amd.com>

[ROCm/rccl commit: 1fe031402a]

projects/rccl/tools/scripts/topo_val.sh

@@ -21,7 +21,7 @@
 
 DIR="$(cd -P "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 
-for i in {0..51}
+for i in {0..52}
 do
 	if [[ $i -eq 50 ]] || [[ $i -eq 51 ]]
 	then