Vladimir Kondratyev 21e459c61b [ig4] Only enable interrupts when we want them. Otherwise keep mask at 0.
This avoids possible interrupt storms, depending on the state of the I2C
controller before the driver attached.

During attaching this clears the interrupt mask.

Revert r338215 as this change makes it no-op.

Obtained from:	DragonflyBSD (d7c8555)
2019-11-03 20:42:04 +00:00
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2019-11-03 00:13:23 +00:00
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