msm: pil: Replace disable_irq_nosync with disable_irq wherever required

Limit usage of disable_irq_nosync by using it only in interrupt
handler functions. Otherwise, use disable_irq. This could help
remove any race conditions which might occur due to _nosync.

Change-Id: Ie783830963fcb800bc50f74b0c29314fd9fa526a
Signed-off-by: Deepak Katragadda <dkatraga@codeaurora.org>