Wi-Fi card WLE1216V5 does not work with Turris MOX

It was reported by our community on forum:

• https://forum.turris.cz/t/qca9984-cascade-series-wifi-card/16766
• https://forum.turris.cz/t/turris-os-5-3-4-is-released/16573/16?u=pepe

Happens since Turris OS 5.3.4

Related to aardvark driver backports to kernel 4.14.

cc: @prohar