MAINTAINERS: include governors into CPU IDLE TIME MANAGEMENT FRAMEWORK

The current pattern in the file entry does not make the files in the
governors subdirectory to be a part of the CPU IDLE TIME MANAGEMENT
FRAMEWORK.

Adjust the file pattern to include files in governors.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

MAINTAINERS

@@ -4583,7 +4583,7 @@ B:	https://bugzilla.kernel.org
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git
 F:	Documentation/admin-guide/pm/cpuidle.rst
 F:	Documentation/driver-api/pm/cpuidle.rst
-F:	drivers/cpuidle/*
+F:	drivers/cpuidle/
 F:	include/linux/cpuidle.h
 CPU POWER MONITORING SUBSYSTEM