This value should be 9 to correspond with the rev J motherboards.
This property was renamed to mboard_last_rev_compat in a previous commit.
But mboard_max_rev is actually a more accurate description,
since it specifies the latest hardware revision that the software
is aware of. I renamed all references back to mboard_max_rev.
Newer revisions of the E320 and N3xx motherboards use EEPROM version 3,
and store a rev_compat field. The rev_compat is the last revision that
this hardware is compatible with. We now use that instead of simply the
revision.
The capability to run the DDR3 BIST is built into the DmaFIFO RFNoC
block, which is not always available. This change performs a quick check
before for its existence before retrieving the throughput values, and
thus can provide a better error message in that case.
