Commit 9bf39814 authored by edenhuang's avatar edenhuang
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LWIS: Add mutex to protect I2C Bus 

I2C has a chance to fail during camera tests.
Different devices(sensors, actuators, ois) access I2C bus at the same
time, then pinctrl error. Need a mutex to protect the I2C bus.

Bug: 183157113
Test: CTS
Change-Id: Icf51b4a070b5d3668197bb776498093ff10d45f9
parent 406a4f3d
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