FROMGIT: arm64: dts: qcom: qrb5165-rb5: declare tri-led user leds

Qualcomm RB5 platform uses Light Pulse Generator tri-led block to drive
three green leds. Add device nodes defining those leds.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220505145102.1432670-4-dmitry.baryshkov@linaro.org
(cherry picked from commit bf3708c6
 git://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux.git

 for-next)
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>