arm64: dts: qcom: pmi8998: Add nodes for LAB and IBB regulators

This patch adds devicetree nodes for LAB and IBB regulators.

Signed-off-by: Nisha Kumari <nishakumari@codeaurora.org>
[sumits: Updated for better compatible strings and names]
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Link: https://lore.kernel.org/r/20200622124110.20971-4-sumit.semwal@linaro.org


Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>