arch-vega: Fix s_endpgm instruction

Copy over changes that had been made to s_engpgm in GCN3
but weren't added to the Vega implementation

Change-Id: I1063f83b1ce8f7c5e451c8c227265715c8f725b9
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/47519
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Reviewed-by: Matthew Poremba <matthew.poremba@amd.com>
Reviewed-by: Alex Dutu <alexandru.dutu@amd.com>
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
1 file changed