Disable "value of intrinsic immediate argument 'value' is out of range
'lowerbound - upperbound'" warning. Visual Studio emits this warning though
the parameters are conditionally checked in e.g., v256_shr_n_byte. Adding a
mask doesn't always appear to be sufficient.

previously:
079acac1 Silence warnings in VS

Change-Id: Ie51ca75b3816636336122fb9a9a9cf20fdf2486c