Commit d5a05e69ac6e4 ("net: stmmac: Use hrtimer for TX coalescing") causes
high CPU usage due to hrtimer raw spin locks.
Fixes: #11676
Signed-off-by: Oskari Lemmela <oskari@lemmela.net>
[ renumber and rename revert patch ]
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>