defconfig: kona: Enable QPNP_PBS driver

Enable QPNP_PBS driver to trigger PBS sequence for some PMIC
specific configuration on PM8150B that is used on kona platforms.

Change-Id: I5ee2075c3758b8646da924660938d6d22128d07c
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>