defconfig: Increase SSR notification timeout values

Extend timeouts for sysmon communication and subsystem
notifier timeouts from 10 seconds to 20 seconds to allow
more time for callbacks that may wait for their own events
with their own timeouts.

Change-Id: I90e6e1e2841dacb858414215b23a9522b84f6346
Signed-off-by: Isaac J. Manjarres <isaacm@codeaurora.org>