guamp: arm64/dtsi enable regulator_fixed_voltage

-- Enable CONFIG_REGULATOR_FIXED_VOLTAGE
-- Camera macro AF driver LDO enabled needed

Change-Id: Id827744e0768583d32855ff7a69b4a48f5d362c4
Signed-off-by: jixu <jixu@motorola.com>
Reviewed-on: https://gerrit.mot.com/1521069
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Wang Liu <liuwang2@lenovo.com>
Reviewed-by: Jian Zhang <zhangjo@motorola.com>
Reviewed-by: Dawei Wang <wangdw10@motorola.com>
Reviewed-by: Long Cheng <chengl1@motorola.com>
Reviewed-by: Shuo Wang <wangsh18@motorola.com>
Reviewed-by: Zhuoran Xu <xuzr3@motorola.com>
Reviewed-by: Zhilong Wang <wangzl30@motorola.com>
Reviewed-by: Zhichao Chen <chenzc2@motorola.com>
Reviewed-by: Zhenxin Xi <xizx@motorola.com>
Submit-Approved: Jira Key

arch/arm64/configs/vendor/ext_config/moto-bengal.config

@@ -28,6 +28,7 @@ CONFIG_USB_USBNET=y
 CONFIG_USB_UAS=y
 CONFIG_USB_CONFIGFS_ACM=y
 CONFIG_U_SERIAL_CONSOLE=y
+CONFIG_REGULATOR_FIXED_VOLTAGE=y
 # CONFIG_CORESIGHT is not set
 # CONFIG_CORESIGHT_LINK_AND_SINK_TMC is not set
 # CONFIG_CORESIGHT_DYNAMIC_REPLICATOR is not set