tests: Disable failing MI_Example/Timing CPU X86 Boot Tests

As noted in this jira issue:
https://gem5.atlassian.net/browse/GEM5-1216, these tests are failing.
We are going to disable them until we can figure out the root cause of
this problem.

Change-Id: I8511beaac0bae3c6d2a42af59035cc4620cd5bb2
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/58769
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
1 file changed