defconfig: msmkrypton: enable QPNP_POWER_ON

Enable the QPNP_POWER_ON configuration option to compile the qpnp-power-on
driver. This driver will control the PMIC power on and power off
functionality.

Change-Id: Ie25235995e963b0efa92d880dbed798cebfb483c
Signed-off-by: Xiaozhe Shi <xiaozhes@codeaurora.org>