The parameters of some built-ins are a subarray of the parameters of
another built-in. In this kind of case they can point to the same
parameters array, and just use a different parameter count. This
shaves a few kilobytes from the binary size.

BUG=angleproject:2267
TEST=angle_unittests

Change-Id: Id166340b4bf5be966bf8c62ce6cd88e5409f647a
Reviewed-on: https://chromium-review.googlesource.com/968601Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>