gpu: nvgpu: Add and move FECS trace flag

Added fecs trace characteristic flag to vgpu to determine for
platform support

Also moved fecs flag from ctxsw init to fecs init for native linux.
This makes flag init uniform across both platforms.

JIRA EVLR-993

Change-Id: Id62f31954cb5d7028ef01a199548f5f908b51eb0
Signed-off-by: Vishnu Reddy Mandalapu <vmandalapu@nvidia.com>
Reviewed-on: http://git-master/r/1305045
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

drivers/gpu/nvgpu/gk20a/ctxsw_trace_gk20a.c

@@ -518,9 +518,6 @@ int gk20a_ctxsw_trace_init(struct gk20a *g)
 	if (unlikely(err))
 		goto fail;
 
-	g->gpu_characteristics.flags |=
-		NVGPU_GPU_FLAGS_SUPPORT_FECS_CTXSW_TRACE;
-
 	return 0;
 
 fail:

drivers/gpu/nvgpu/gk20a/fecs_trace_gk20a.c

@@ -584,6 +584,9 @@ static int gk20a_fecs_trace_init(struct gk20a *g)
 	nvgpu_mutex_init(&trace->hash_lock);
 	hash_init(trace->pid_hash_table);
 
+	g->gpu_characteristics.flags |=
+		NVGPU_GPU_FLAGS_SUPPORT_FECS_CTXSW_TRACE;
+
 	gk20a_fecs_trace_debugfs_init(g);
 	return 0;
 

drivers/gpu/nvgpu/vgpu/fecs_trace_vgpu.c

@@ -52,6 +52,8 @@ static int vgpu_fecs_trace_init(struct gk20a *g)
 		dev_info(dev_from_gk20a(g), "does not support fecs trace\n");
 		goto fail;
 	}
+	g->gpu_characteristics.flags |=
+		NVGPU_GPU_FLAGS_SUPPORT_FECS_CTXSW_TRACE;
 
 	hv_np = args.np;
 	mempool = args.args[0];