tests: Update presubmit.sh to use Clang-14

As of https://gem5-review.googlesource.com/c/public/gem5/+/64176 we now
support Clang-14. This patch therefore updates the Kokoro tests to
utilize this for the `ALL/gem5.fast` compilation. This should help catch
Clang compilation errors earlier.

Change-Id: I6b5bac47565823bbd413e006cfe577468b1bbb70
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/64292
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
1 file changed