wifi: mt76: mt7915: reset the device after MCU timeout

On MT7915, MCU hangs do not trigger watchdog interrupts, so they can only
be detected through MCU message timeouts. Ensure that the hardware gets
restarted when that happens in order to prevent a permanent stuck state.

Link: https://patch.msgid.link/20240827093011.18621-15-nbd@nbd.name


Signed-off-by: Felix Fietkau <nbd@nbd.name>