Add support for SX1281 on 2.4 GHz (#1809)

* Add support for SX1281 on 2.4 GHz

* only allow wide BW settings when the right chip is detected

* portduino cannot use this chip yet as it uses an old modified version of radiolib

* missed a spot

* Attempt to supress false positive

* Attempt to supress false positive

* Trying casing from the cpp-check manual

* Trying casing from the cpp-check manual

* Inline suppr should be default but...

* Maybe casting it will make the damn thing shut up

Co-authored-by: Ben Meadors <benmmeadors@gmail.com>