Strip down the (not enabled) pcagpio(4) GPIO extender. This removes
authorpatrick <patrick@openbsd.org>
Mon, 9 Jul 2018 18:48:52 +0000 (18:48 +0000)
committerpatrick <patrick@openbsd.org>
Mon, 9 Jul 2018 18:48:52 +0000 (18:48 +0000)
commite7963e40d25d95e031958372085a27d7aa2dcbef
tree65abfb1bbb1a34ca8a4dcf7c6a6f1b16ac505e19
parent79d24df5cf2320cb0e613b7b501dffab40b34937
Strip down the (not enabled) pcagpio(4) GPIO extender.  This removes
the sensors code and user-controllable GPIO bus attachment but at the
same time hooks pcagpio(4) into the OFW GPIO framework so that it can
be used by other device tree based drivers.

Discussed with deraadt@
ok kettenis@
sys/dev/i2c/files.i2c
sys/dev/i2c/pca9554.c