[CFI] Enable generalized cfi-icall for sqlite

Upstream cfi-icall fixes to sqlite have landed such that it is now type
generalization cfi-icall safe.

Bug: 785442
Change-Id: I162aa0e13eba9f11b06d8edeb452c6015f1f4e99
Reviewed-on: https://chromium-review.googlesource.com/938494
Reviewed-by: Peter Collingbourne <pcc@chromium.org>
Reviewed-by: Victor Costan <pwnall@chromium.org>
Commit-Queue: Victor Costan <pwnall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#542939}
GitOrigin-RevId: fc6ccf6d00008834d326125c873216621e468578