drm/amdgpu: Disable RAS by default on APU flatform

Disable RAS feature by default for aqua vanjaram on APU platform.

Changed from V1:
	Splite Disable RAS by default on APU platform into a
	separated patch.

Changed from V2:
	Avoid to modify global variable amdgpu_ras_enable.
Signed-off-by: Stanley.Yang <Stanley.Yang@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c

@@ -2517,6 +2517,15 @@ static void amdgpu_ras_check_supported(struct amdgpu_device *adev)
 	/* hw_supported needs to be aligned with RAS block mask. */
 	adev->ras_hw_enabled &= AMDGPU_RAS_BLOCK_MASK;
 
+
+	/*
+	 * Disable ras feature for aqua vanjaram
+	 * by default on apu platform.
+	 */
+	if (adev->ip_versions[MP0_HWIP][0] == IP_VERSION(13, 0, 6))
+		adev->ras_enabled = amdgpu_ras_enable != 1 ? 0 :
+			adev->ras_hw_enabled & amdgpu_ras_mask;
+	else
 		adev->ras_enabled = amdgpu_ras_enable == 0 ? 0 :
 			adev->ras_hw_enabled & amdgpu_ras_mask;
 }