drm/amdgpu/smu10: fix smu10_get_clock_by_type_with_voltage

Cull out 0 clocks to avoid a warning in DC.

Bug: https://gitlab.freedesktop.org/drm/amd/issues/963Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/hwmgr/smu10_hwmgr.c

@@ -1080,9 +1080,11 @@ static int smu10_get_clock_by_type_with_voltage(struct pp_hwmgr *hwmgr,
 
 	clocks->num_levels = 0;
 	for (i = 0; i < pclk_vol_table->count; i++) {
-		clocks->data[i].clocks_in_khz = pclk_vol_table->entries[i].clk  * 10;
-		clocks->data[i].voltage_in_mv = pclk_vol_table->entries[i].vol;
-		clocks->num_levels++;
+		if (pclk_vol_table->entries[i].clk) {
+			clocks->data[clocks->num_levels].clocks_in_khz = pclk_vol_table->entries[i].clk  * 10;
+			clocks->data[clocks->num_levels].voltage_in_mv = pclk_vol_table->entries[i].vol;
+			clocks->num_levels++;
+		}
 	}
 
 	return 0;