cpuidle: Use local_clock_noinstr()

With the introduction of local_clock_noinstr(), local_clock() itself
is no longer marked noinstr, use the correct function.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Tested-by: Michael Kelley <mikelley@microsoft.com>  # Hyper-V
Link: https://lore.kernel.org/r/20230519102716.045980863@infradead.org