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svn:author
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gonzo
K 8
svn:date
V 27
2016-12-26T22:13:43.347910Z
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V 256
[ig4] Add ACPI platform support for ig4 driver

Add ACPI part for ig4 driver to make it work on Intel BayTrail SoC where
ig4 device is available only through ACPI

Reviewed by:	avg
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D8742

END