This does several trivial DTS style improvements:
- Move device name compatible to DTS files (and fix compatible in
11acnas.dts)
- Remove xhci node as status is set to okay in mt7621.dtsi already
- 0x0 instead of 0x0000
- Simplify state_default node definition
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>