msm: camera: Add LED trigger flash driver for 8974
Add LED trigger flash driver for back camera on 8974. Create
LED trigger client, read hardware parameters from device tree,
use it to configure LED flash using LED trigger event API.
Change-Id: I8c8b7bd5a07b2d37dfe5365a0e83b9162c284c6c
Signed-off-by:
Sreesudhan Ramakrish Ramkumar <srramku@codeaurora.org>
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