arm64: defconfig: enable UniPhier SoCs support

Enable ARCH_UNIPHIER with its on-chip UART driver.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm64/configs/defconfig

@@ -47,6 +47,7 @@ CONFIG_ARCH_TEGRA_132_SOC=y
 CONFIG_ARCH_QCOM=y
 CONFIG_ARCH_SPRD=y
 CONFIG_ARCH_THUNDER=y
+CONFIG_ARCH_UNIPHIER=y
 CONFIG_ARCH_VEXPRESS=y
 CONFIG_ARCH_XGENE=y
 CONFIG_ARCH_ZYNQMP=y
@@ -114,6 +115,7 @@ CONFIG_SERIAL_8250=y
 CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_SERIAL_8250_DW=y
 CONFIG_SERIAL_8250_MT6577=y
+CONFIG_SERIAL_8250_UNIPHIER=y
 CONFIG_SERIAL_AMBA_PL011=y
 CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
 CONFIG_SERIAL_SAMSUNG=y