cpufreq: Update MAINTAINERS to include schedutil governor

List cpufreq maintainers as well for schedutil governor apart from
scheduler maintainers.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

MAINTAINERS

@@ -4073,7 +4073,9 @@ F:	Documentation/admin-guide/pm/intel_pstate.rst
 F:	Documentation/cpu-freq/
 F:	Documentation/devicetree/bindings/cpufreq/
 F:	drivers/cpufreq/
+F:	kernel/sched/cpufreq*.c
 F:	include/linux/cpufreq.h
+F:	include/linux/sched/cpufreq.h
 F:	tools/testing/selftests/cpufreq/
 
 CPU FREQUENCY DRIVERS - ARM BIG LITTLE