soc: qcom: Add forever loop after non-secure bite configuration

The core which induces the non-secure bite should not
proceed further. Non-secure bite is a secure interrupt
and one of the core handles and that may not be the same
core which configured the watchdog. Add forever loop
after non-secure bit programming, so that core do not
proceed further.

Change-Id: I5523ad00d47755df6eed2bfb9210b585ee22f4ed
Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>
Signed-off-by: Prakruthi Deepak Heragu <pheragu@codeaurora.org>