arm64: defconfig: add CONFIG_ARM_SP805_WATCHDOG

Enable the SP805 watchdog timer
Signed-off-by: NRay Jui <ray.jui@broadcom.com>
Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com>

arch/arm64/configs/defconfig

@@ -378,6 +378,7 @@ CONFIG_ROCKCHIP_THERMAL=m
 CONFIG_TEGRA_BPMP_THERMAL=m
 CONFIG_UNIPHIER_THERMAL=y
 CONFIG_WATCHDOG=y
+CONFIG_ARM_SP805_WATCHDOG=y
 CONFIG_S3C2410_WATCHDOG=y
 CONFIG_MESON_GXBB_WATCHDOG=m
 CONFIG_MESON_WATCHDOG=m