ASoC: wcd937x: Add change for LDOL VOUT accuracy calibration

ATE stores the calibration result in EFUSE register. This has to
be copied to sleep bandgap voltage for accurate calibration.

Change-Id: I118c5c3b42ba4cfd42185d8da6d468f44e31b88f
Signed-off-by: Vatsal Bucha <vbucha@codeaurora.org>