The ini ratemask_type and ratemask_set can be used to limit
the maximum phy rate. The ratemask_type is used to select
the phy mode and the ratemask_set to select desired NSS and MCS.
It can be used to optimize link performance.
Change-Id: Ia5c9f3a80eb93710bdcf53dabc4a45e554753b01
CRs-Fixed: 2758859
Some ini descriptions are different to common, and some of them
include wrong information, so correct them and use unified form.
Change-Id: I36348fb26a03cab254fd309d792125b8a21ad02f
CRs-Fixed: 2402446