Per #13610, recent changes to this driver seem to have introduced
unexpected latency regressions. This patch effectively reverts these
patches which changed the meat of the driver:
ac36886e62 drivers: nrf: timer: add inline qualifier where
inlining is intended
084363a0dc drivers: timer: nrf: refactor for speed and correctness
71882ff8c4 drivers: timer: nrf: drop unnecessary counter mask
4b24e88fa4 drivers: timer: nrf: use irq_lock instead of spinlock
While backporting these seemingly unrelated hygiene patches:
7cbdb6c5c0 drivers/timer: Restore non-tickless tick count behavior
d30c9aeafd drivers: nrf_power_clock: Migrate to DTS.
75f77db432 include: misc: util.h: Rename min/max to MIN/MAX
Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
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