defconfig: enable power management functionality for sdxlemur

Enable PDC, RPMH, LPM, Master/SoC sleep stats, CommandDB modules for
sdxlemur.

Change-Id: I8e3f6aa2fdff3653352dd653d60a29af06f95b8a
Signed-off-by: Lina Iyer <ilina@codeaurora.org>
Signed-off-by: Tushar Nimkar <tnimkar@codeaurora.org>