ssa_database: combine several port record fields into one field

Port records modifications:

 - is_fdr10_active field appears as MSB bit of 'rate' field
 - is_switch was added to port records (appears in guid_to_lid
   recs as well) 'rate' field as bit 7
 - rate takes the first 6 bits out of the 'rate' field

Signed-off-by: Ilya Nelkenbaum <ilyan@mellanox.com>
Signed-off-by: Hal Rosenstock <hal@mellanox.com>