time/sched_clock: Fix formatting of frequency reporting code

Use flat rather than nested indentation for chained else/if clauses as
per coding-style.rst:

if (x == y) {
..
} else if (x > y) {
...
} else {
....
}

This also improves readability.

Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: John Stultz <jstultz@google.com>
Link: https://lore.kernel.org/r/alpine.DEB.2.21.2204240148220.9383@angie.orcam.me.uk