msm: pil-pronto: Disable bite interrupt

Disable the bite interrupt before invoking subsystem restart, interrupt
should be disabled in the handler itself to avoid further interrupts
while processing the first one.

Change-Id: I1c2306f6ed7109eefd69f3ab124afe0d59759968
Signed-off-by: Sameer Thalappil <sameert@codeaurora.org>