msm: camera: vfe: Multiple fixes

This change sets the VFE reset IRQ mask based on hw version
and programs a default value to core cfg. This default
value is needed until support for programming is added.

Change-Id: I29a8ded9c365decbc8a2849faf05b124e8d120fc
Signed-off-by: Venkat Chinta <vchinta@codeaurora.org>