drm/amdgpu: drop IH_CHICKEN programming from vega10 ih block

except for RENOIR, it is not correct to have
IH_CHICKEN programming in vega10 ih block.
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Dennis Li <Dennis.Li@amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/vega10_ih.c

@@ -274,9 +274,7 @@ static int vega10_ih_irq_init(struct amdgpu_device *adev)
 
 	adev->nbio.funcs->ih_control(adev);
 
-	if ((adev->asic_type == CHIP_ARCTURUS &&
-	     adev->firmware.load_type == AMDGPU_FW_LOAD_DIRECT) ||
-	    adev->asic_type == CHIP_RENOIR) {
+	if (adev->asic_type == CHIP_RENOIR) {
 		ih_chicken = RREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN);
 		if (adev->irq.ih.use_bus_addr) {
 			ih_chicken = REG_SET_FIELD(ih_chicken, IH_CHICKEN,