drm/amdgpu/sdma5: add golden settings for navi12 (v2)

common golden settings are put in golden_settings_sdma_5 array

v2: update settings (Alex)
Signed-off-by: NXiaojie Yuan <xiaojie.yuan@amd.com>
Reviewed-by: NJack Xiao <Jack.Xiao@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/sdma_v5_0.c

@@ -99,6 +99,8 @@ static const struct soc15_reg_golden golden_settings_sdma_nv14[] = {
 };
 
 static const struct soc15_reg_golden golden_settings_sdma_nv12[] = {
+	SOC15_REG_GOLDEN_VALUE(GC, 0, mmSDMA0_RLC3_RB_WPTR_POLL_CNTL, 0xfffffff7, 0x00403000),
+	SOC15_REG_GOLDEN_VALUE(GC, 0, mmSDMA1_RLC3_RB_WPTR_POLL_CNTL, 0xfffffff7, 0x00403000),
 };
 
 static u32 sdma_v5_0_get_reg_offset(struct amdgpu_device *adev, u32 instance, u32 internal_offset)