defconfig: Enable PIL, SSR and SYSMON configurations

Peripheral loading, subsystem restart and system monitor
need to be supported on the MSM8916 and other 64bit
targets. Enable these configs.

Change-Id: I74b9ec9fc393faf7fea88ca758bb3f5f7a484f79
Signed-off-by: Vikram Mulukutla <markivx@codeaurora.org>