arm64: defconfig: Add PWM Fan support

The Tegra194 Jetson AGX Xavier board includes a PWM based fan. Enable
PWM fan support in the ARM64 defconfig to support the fan on this board.
Please note that the device-tree PWM fan node is already present for
this board.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm64/configs/defconfig

@@ -408,6 +408,7 @@ CONFIG_BATTERY_SBS=m
 CONFIG_BATTERY_BQ27XXX=y
 CONFIG_SENSORS_ARM_SCPI=y
 CONFIG_SENSORS_LM90=m
+CONFIG_SENSORS_PWM_FAN=m
 CONFIG_SENSORS_RASPBERRYPI_HWMON=m
 CONFIG_SENSORS_INA2XX=m
 CONFIG_THERMAL_GOV_POWER_ALLOCATOR=y