drm/amdgpu: set indirect sram mode for VCN3.0

Use indirect sram for secure DPG mode

V2: update description.
Signed-off-by: NBoyuan Zhang <boyuan.zhang@amd.com>
Reviewed-by: NJames Zhu <james.zhu@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

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

@@ -111,6 +111,9 @@ int amdgpu_vcn_sw_init(struct amdgpu_device *adev)
 		break;
 	case CHIP_SIENNA_CICHLID:
 		fw_name = FIRMWARE_SIENNA_CICHLID;
+		if ((adev->firmware.load_type == AMDGPU_FW_LOAD_PSP) &&
+		    (adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG))
+			adev->vcn.indirect_sram = true;
 		break;
 	default:
 		return -EINVAL;