Use only the jedec,spi-nor compatible string. Everything else either
never worked or is only support to keep compatibility.
Remove the linux,modalias property. It is obsolete since kernel 4.4.
Signed-off-by: Mathias Kresin <dev@kresin.me>
Uses upstream code to parse DT supported band/frequency information.
Update existing .dts files to the new format and remove unnecessary
overrides.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
