Since swizzled textures have multiple SRVs and the same serial,
it was possible that the bound SRV would not be updated if the
texture became swizzled while already bound.

Change-Id: Id06e82f4002aa7f7661c7a69243692aa65a83b48
Reviewed-on: https://chromium-review.googlesource.com/181772Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Shannon Woods <shannonwoods@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>