Set multitexturing threshold for NVIDIA

Change-Id: Ie992b34b8fdd3bf569241cce7c851880258f05df
Reviewed-on: https://skia-review.googlesource.com/78261
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
2 files changed