msm: camera: csid: Clear CSID top irq mask before reset

Clear top irq mask before strobing hardware reset.
This will make sure no interrupts during the hardware
reset cycle.

Change-Id: I85c65b67fca8500329cc6be2bea8efaffd8cd097
Signed-off-by: Ayush Kumar <ayushkr@codeaurora.org>