(split) There is an issue (not seen in our testing) where "yarrow" and
"dummy" switch priorities, and the users are left with no usable
/dev/random. The fix assigns priories to these and gives the users
what they want. The override tuneable has a stupid name (blame me!)
and this fixes it to be something that 'sysctl kern.random' emits
and is the right thing to set.

Approved by:	re (gjb)
Approved by:	secteam (cperciva)
(split) Add new USB ID.

PR:		usb/182936
Submitted by:	Keith White <kwhite@site.uottawa.ca>
MFC after:	1 week
(split) Fix rf registers for RT3070.
(split) Fix lower bits of RF_R3 for RT3370 and newer.  This change doesn't affect
older chipsets.
(split) Since the DAC issue has been fixed in RT3070(F), the voltage raising fix
is no longer needed.
(split) Correct tx mixer gain value for RT3070 and RT3071.

Correctly value in EEPROM/EFUSE is one or more for RT3070 and
two or more for other RT3071 chips.
(split) Merge branch 'CURRENT' (commit '9a1a8ad6')