enable zram writeback for rhode set CONFIG_ZRAM_WRITEBACK to y Change-Id: I879cf53bb58afeac91a5ea102947736758ca4b96 Signed-off-by: lulei1 <lulei1@motorola.com> Reviewed-on: https://gerrit.mot.com/2154119 SME-Granted: SME Approvals Granted SLTApproved: Slta Waiver Tested-by: Jira Key Reviewed-by: Zhangqing Huang <huangzq2@motorola.com> Reviewed-by: Xiangpo Zhao <zhaoxp3@motorola.com> Submit-Approved: Jira Key