K 10
svn:author
V 6
adrian
K 8
svn:date
V 27
2016-04-29T01:53:45.219500Z
K 7
svn:log
V 350
[ath] Add LDPC transmit support.

LDPC adds better transmit reliability if both ends support it.

You in theory can do both STBC and LDPC at the same time.
If I see issues I'll disable it.

* Only enable it if both ends of a connection negotiate it.
* Disable it if any rate is non-11n.
* Count both LDPC TX and STBC TX.

Tested:

* AR9380, STA mode

END