K 10
svn:author
V 6
adrian
K 8
svn:date
V 27
2013-04-05T00:22:53.840743Z
K 7
svn:log
V 166
AR9330/AR9331 also needs to ACK the APB interrupt register, same as
AR724x.

This fixes 'stuck interrupt' problems I was having when writing the
uart interrupt code.

END