K 10
svn:author
V 6
luporl
K 8
svn:date
V 27
2019-12-09T13:09:32.599465Z
K 7
svn:log
V 354
[PPC64] Enable opal console use as a GDB DBGPORT

This change makes it possible to use OPAL console as a GDB debug port.

Similar to uart and uart_phyp debug ports, it has to be enabled by
setting the hw.uart.dbgport variable to the serial console node
of the device tree.

Reviewed by:	jhibbits
Differential Revision:	https://reviews.freebsd.org/D22649

END