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

kernel/time/sched_clock.c

@@ -202,14 +202,12 @@ sched_clock_register(u64 (*read)(void), int bits, unsigned long rate)
 	if (r >= 4000000) {
 		r = DIV_ROUND_CLOSEST(r, 1000000);
 		r_unit = 'M';
-	} else {
-		if (r >= 4000) {
+	} else if (r >= 4000) {
 		r = DIV_ROUND_CLOSEST(r, 1000);
 		r_unit = 'k';
 	} else {
 		r_unit = ' ';
 	}
-	}
 
 	/* Calculate the ns resolution of this counter */
 	res = cyc_to_ns(1ULL, new_mult, new_shift);