MAINTAINERS: add entry for intel_pstate

Add entry for intel_pstate.
Signed-off-by: NKristen Carlson Accardi <kristen@linux.intel.com>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

MAINTAINERS

@@ -4837,6 +4837,12 @@ T:	git git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux.git
 S:	Supported
 F:	drivers/idle/intel_idle.c
 
+INTEL PSTATE DRIVER
+M:	Kristen Carlson Accardi <kristen@linux.intel.com>
+L:	linux-pm@vger.kernel.org
+S:	Supported
+F:	drivers/cpufreq/intel_pstate.c
+
 INTEL FRAMEBUFFER DRIVER (excluding 810 and 815)
 M:	Maik Broemme <mbroemme@plusserver.de>
 L:	linux-fbdev@vger.kernel.org