defconfig: Enable rpm-smd and qti_regulator option for sdxnightjar

Enable rpm-smd regulator and qti_regulator for sdxnightjar,
to support regulators inside pmics which are controlled by the
RPM processor.

Change-Id: I898e8d0984d1322e9f2f120e6fc03b030616f1f3
Signed-off-by: Kavya Nunna <knunna@codeaurora.org>