K 10
svn:author
V 6
adrian
K 8
svn:date
V 27
2011-09-15T09:06:28.043310Z
K 7
svn:log
V 214
Bring over a HAL function from the reference code which
calculates the amount of time spent in TX/RX/channel busy.

This is just for debugging; it shouldn't be merged in this
form to -HEAD.

Obtained from:	Atheros

END