intel/perf: improve dynamic loading config detection
We're currently trying to detect dynamic loading config support by trying to remove to test config (hard coded in the i915 driver) and checking we get ENOENT.
This can fail if the test config was updated in Mesa but not yet in i915.
A better way to do this is to pick an invalid ID and check for ENOENT.
Signed-off-by: Lionel Landwerlin lionel.g.landwerlin@intel.com Cc: mesa-stable@lists.freedesktop.org