drm/amdgpu/gfx10: add gfx config for navi12

got from mmCP_MAX_CONTEXT and mmPA_SC_FIFO_SIZE

v2: squash all navi asics together because the
settings are the same.
Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c

@@ -1095,18 +1095,12 @@ static void gfx_v10_0_gpu_early_init(struct amdgpu_device *adev)
 
 	switch (adev->asic_type) {
 	case CHIP_NAVI10:
-		adev->gfx.config.max_hw_contexts = 8;
-		adev->gfx.config.sc_prim_fifo_size_frontend = 0x20;
-		adev->gfx.config.sc_prim_fifo_size_backend = 0x100;
-		adev->gfx.config.sc_hiz_tile_fifo_size = 0;
-		adev->gfx.config.sc_earlyz_tile_fifo_size = 0x4C0;
-		gb_addr_config = RREG32_SOC15(GC, 0, mmGB_ADDR_CONFIG);
-		break;
 	case CHIP_NAVI14:
+	case CHIP_NAVI12:
 		adev->gfx.config.max_hw_contexts = 8;
 		adev->gfx.config.sc_prim_fifo_size_frontend = 0x20;
 		adev->gfx.config.sc_prim_fifo_size_backend = 0x100;
-		adev->gfx.config.sc_hiz_tile_fifo_size = 0x0;
+		adev->gfx.config.sc_hiz_tile_fifo_size = 0;
 		adev->gfx.config.sc_earlyz_tile_fifo_size = 0x4C0;
 		gb_addr_config = RREG32_SOC15(GC, 0, mmGB_ADDR_CONFIG);
 		break;