leds: Add snapshot of QTI TRI_LED driver

QTI TRI_LED driver helps configuring the output of LED channels
in TRI_LED and HR_LED peripherals.

This snapshot is taken as of msm-4.14
commit 9bb584ae3a9d ("msm/sde/rotator: Add rev checks for sdmmagpie").

Change-Id: I324494d9c048f300b74ad9cc7ca3d29a8014c930
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>