K 10
svn:author
V 3
avg
K 8
svn:date
V 27
2013-02-02T11:38:26.968896Z
K 7
svn:log
V 411
uart: add resume method and enable it for attachments on the most common
x86 buses

Otherwise the uart hardware could be in such a state after the resume
where IER is cleared and thus no interrupts are generated.

This behavior is observed and tested with QEMU, so I am comitting this
change to help with my debugging.
There has been no feedback from users of serial ports on real hardware.

MFC after:	20 days

END