defconfig:Troika : add config for Set BUCK8 voltage to1.35V

defconfig:Troika	: add config for Set BUCK8 voltage to1.35V

Merge samsung patch:
[(CR)][Troika	][regulator] Set BUCK8 output voltage to 1.35V.
Signed-off-by: yujing <jing12.yu@samsung.com>
Change-Id: If688ef59d1501635b12e584f1cac6fd3dac37bc7
Signed-off-by: Wen Xie <xiewen3@motorola.com>
Reviewed-on: https://gerrit.mot.com/1327859
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Zhengming Yao <yaozm1@mt.com>
Reviewed-by: Xiangpo Zhao <zhaoxp3@motorola.com>
Submit-Approved: Lu Lu <lulu2@mt.com>