configs: ls1088a: Enable DM support for pcf2127 rtc

Enable related configs on all ls1088aqds boards to support pcf2127
rtc DM function.

Signed-off-by: Chuanhua Han <chuanhua.han@nxp.com>
Reviewed-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>