drm/amdgpu: Fix refclk reporting for SMU v13.0.6

SMU v13.0.6 SOCs have 100MHz reference clock.
Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/soc15.c

@@ -325,7 +325,8 @@ static u32 soc15_get_xclk(struct amdgpu_device *adev)
 	u32 reference_clock = adev->clock.spll.reference_freq;
 
 	if (adev->ip_versions[MP1_HWIP][0] == IP_VERSION(12, 0, 0) ||
-	    adev->ip_versions[MP1_HWIP][0] == IP_VERSION(12, 0, 1))
+	    adev->ip_versions[MP1_HWIP][0] == IP_VERSION(12, 0, 1) ||
+	    adev->ip_versions[MP1_HWIP][0] == IP_VERSION(13, 0, 6))
 		return 10000;
 	if (adev->ip_versions[MP1_HWIP][0] == IP_VERSION(10, 0, 0) ||
 	    adev->ip_versions[MP1_HWIP][0] == IP_VERSION(10, 0, 1))