KVM: Rename debugfs_dir to kvm_debugfs_dir

It's a globally exported symbol now.

Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 81d4c33..4e16682 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -315,7 +315,7 @@
 	struct dentry *dentry;
 };
 extern struct kvm_stats_debugfs_item debugfs_entries[];
-extern struct dentry *debugfs_dir;
+extern struct dentry *kvm_debugfs_dir;
 
 #ifdef CONFIG_KVM_TRACE
 int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg);