net/sfc/base: update hardware headers for Medford2

net/sfc/base: update hardware headers for Medford2

The changes to efx_regs_ef10.h are auto-generated and include:

 - Updated event RX_L4_CLASS which is now 2 bits (was 3).
   The encoding of TCP, UDP and UNKNOWN are unchanged so
   the narrower Medford2 field definition is compatible with
   all controllers.

 - Fix definition of FATSOv2 option descriptors. These were
   added manually and differ from the auto-generated values
   in some fields (not yet used in common code). The field
   definitions have been corrected to agree with the Linux net
   driver headers and SF-108452-SW.

The remaining changes adapt the common code to use the updated
headers.

Signed-off-by: Andy Moreton <amoreton@solarflare.com>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>