Transceiver52M: Add X300/X310 and E310 USRP support

Treat X300 similar to N200 and resample with 100 MHz base clocking,
which provides some amount of oversampling for reduced phase error
compared to the 1 sample per symbol receiver. Treat E310 similar to 13
MHz rate devices for the lowest computational use.

Signed-off-by: Tom Tsou <tom@tsou.cc>
1 file changed