defconfig: sdm670: enable refgen regulator driver

Enable the REFGEN regulator driver for SDM670 so that consumers
can vote on their hardware needs.

CRs-Fixed: 2113021
Change-Id: I371d59c505d7cbc2770aa10e144063569fa925fc
Signed-off-by: Tirupathi Reddy <tirupath@codeaurora.org>
diff --git a/arch/arm64/configs/sdm670_defconfig b/arch/arm64/configs/sdm670_defconfig
index 79bb308..17231c7 100644
--- a/arch/arm64/configs/sdm670_defconfig
+++ b/arch/arm64/configs/sdm670_defconfig
@@ -342,6 +342,7 @@
 CONFIG_REGULATOR_QPNP_LCDB=y
 CONFIG_REGULATOR_QPNP_OLEDB=y
 CONFIG_REGULATOR_QPNP=y
+CONFIG_REGULATOR_REFGEN=y
 CONFIG_REGULATOR_RPMH=y
 CONFIG_REGULATOR_STUB=y
 CONFIG_MEDIA_SUPPORT=y