arm64: defconfig: enable OP-TEE

This patch enables configs for Trusted Execution Environment (TEE) and
OP-TEE.

+CONFIG_TEE=y
+CONFIG_OPTEE=y
Signed-off-by: Victor Chong <victor.chong@linaro.org>
Signed-off-by: Guodong Xu <guodong.xu@linaro.org>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>

arch/arm64/configs/defconfig

@@ -521,6 +521,8 @@ CONFIG_PHY_XGENE=y
 CONFIG_PHY_TEGRA_XUSB=y
 CONFIG_QCOM_L2_PMU=y
 CONFIG_QCOM_L3_PMU=y
+CONFIG_TEE=y
+CONFIG_OPTEE=y
 CONFIG_ARM_SCPI_PROTOCOL=y
 CONFIG_RASPBERRYPI_FIRMWARE=y
 CONFIG_EFI_CAPSULE_LOADER=y