misc: Generate StateMachine debug includes in deterministic order

Since 3454a4a36e927f483b36fa66baabe2c85ecf3ddc the order of the debug/
includes is non-deterministic which can result in unnecessary rebuilds.

Change-Id: I583d2caf70632e08fa59ac85073786270991edbc
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/54983
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
1 file changed