drm/amd/amdgpu: Add debugfs entries for smc/didt/pcie

This adds 3 new files that can be read/written to access
indirect GPU registers.

Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 6cc174f..1012bd3 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -1953,7 +1953,7 @@
 	struct amdgpu_debugfs		debugfs[AMDGPU_DEBUGFS_MAX_COMPONENTS];
 	unsigned 			debugfs_count;
 #if defined(CONFIG_DEBUG_FS)
-	struct dentry			*debugfs_regs;
+	struct dentry			*debugfs_regs[AMDGPU_DEBUGFS_MAX_COMPONENTS];
 #endif
 	struct amdgpu_atif		atif;
 	struct amdgpu_atcs		atcs;