[FEATURE] Support for Zenbook UX303LN

[Rodancoci]

Hello! First off, thanks for the great work in the project.
I was optimistic at first because I saw the UX303LB model listed as compatible and working and as far as I know it's very similar to my own UX303LN model. pwm and automatic control of the first fan works fine. However I can't get the second fan to work.

I have installed the package from the AUR and I can load the module just fine but this is what dmesg has to say

[  142.327742] asus-fan (init) - dmi sys info: 'ASUSTeK COMPUTER INC.'
[  142.327744] asus-fan (init) - dmi product: 'UX303LN'
[  142.328965] asus-fan (init) - fan-id: 1 | success getting rpm
[  142.329711] asus-fan (init) - fan-id: 2 | failed to get rpm
[  142.329711] asus-fan (init) - temp-id: 1 | success getting temp
[  142.331764] asus-fan (init) - created hwmon device: hwmon6
[  142.331766] asus-fan (init) - finished init, found 1 fan(s) to control

And sensors

asus_fan-isa-0000
Adapter: ISA adapter
CPU Fan:     2193 RPM  (min =   10 RPM, max =  255 RPM)

asus-isa-0000
Adapter: ISA adapter
cpu_fan:     2200 RPM
temp1:        +45.0°C  

coretemp-isa-0000
Adapter: ISA adapter
Package id 0:  +46.0°C  (high = +100.0°C, crit = +100.0°C)
Core 0:        +40.0°C  (high = +100.0°C, crit = +100.0°C)
Core 1:        +44.0°C  (high = +100.0°C, crit = +100.0°C)

Currently running kernel 5.8.5-arch1-1

[Rodancoci]

After reading the other active issues again it turns out I can control the second fan by loading with the force_rpm_override=1 so this seems to be the same issue as #66.