Revert "radv: disable support for VEGA for now."

This reverts commit 611076a41a.

With the two previous commits, vega shouldn't be unstable,
doesn't pass CTS, but can do a complete run, and games shouldn't
hang anymore, so bring it back online.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Cc: "17.2" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>

src/amd/vulkan/winsys/amdgpu/radv_amdgpu_winsys.c

@@ -46,11 +46,6 @@ do_winsys_init(struct radv_amdgpu_winsys *ws, int fd)
 	if (!ac_query_gpu_info(fd, ws->dev, &ws->info, &ws->amdinfo))
 		return false;
 
-	if (ws->info.chip_class >= GFX9) {
-		fprintf(stderr, "radv: VEGA support not completed.\n");
-		return false;
-	}
-
 	/* LLVM 5.0 is required for GFX9. */
 	if (ws->info.chip_class >= GFX9 && HAVE_LLVM < 0x0500) {
 		fprintf(stderr, "amdgpu: LLVM 5.0 is required, got LLVM %i.%i\n",