Change cpufreq_controller from meanless FREQCTL_none to FREQCTL_xen

Signed-off-by: Liu Jinsong <jinsong.liu@intel.com>

diff -r 0aac24c765e8 xen/common/domain.c
--- a/xen/common/domain.c	Thu Jul 24 09:54:16 2008 +0800
+++ b/xen/common/domain.c	Fri Jul 25 08:15:51 2008 +0800
@@ -50,7 +50,7 @@ static void __init setup_cpufreq_option(
     else if ( !strcmp(str, "xen") )
     {
         xen_processor_pmbits |= XEN_PROCESSOR_PM_PX;
-        cpufreq_controller = FREQCTL_none;
+        cpufreq_controller = FREQCTL_xen;
     }
 }
 custom_param("cpufreq", setup_cpufreq_option);
diff -r 0aac24c765e8 xen/include/xen/sched.h
--- a/xen/include/xen/sched.h	Thu Jul 24 09:54:16 2008 +0800
+++ b/xen/include/xen/sched.h	Fri Jul 25 08:13:59 2008 +0800
@@ -541,7 +541,7 @@ static inline void vcpu_unblock(struct v
 #define need_iommu(d)    ((d)->need_iommu && !(d)->is_hvm)
 
 extern enum cpufreq_controller {
-    FREQCTL_none, FREQCTL_dom0_kernel
+    FREQCTL_none, FREQCTL_dom0_kernel, FREQCTL_xen
 } cpufreq_controller;
 
 #endif /* __SCHED_H__ */