x86/intel_rdt: Mark rdt_root and closid_alloc as static

Sparse reports that both of these can be static.

Make it so.
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Vikas Shivappa <vikas.shivappa@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: ravi.v.shankar@intel.com
Cc: tony.luck@intel.com
Cc: fenghua.yu@intel.com
Cc: peterz@infradead.org
Cc: eranian@google.com
Cc: vikas.shivappa@intel.com
Cc: ak@linux.intel.com
Cc: davidcc@google.com
Link: http://lkml.kernel.org/r/1501017287-28083-6-git-send-email-vikas.shivappa@linux.intel.com

arch/x86/kernel/cpu/intel_rdt_rdtgroup.c

@@ -36,7 +36,7 @@
 #include "intel_rdt.h"
 
 DEFINE_STATIC_KEY_FALSE(rdt_enable_key);
-struct kernfs_root *rdt_root;
+static struct kernfs_root *rdt_root;
 struct rdtgroup rdtgroup_default;
 LIST_HEAD(rdt_all_groups);
 
@@ -75,7 +75,7 @@ static void closid_init(void)
 	closid_free_map &= ~1;
 }
 
-int closid_alloc(void)
+static int closid_alloc(void)
 {
 	int closid = ffs(closid_free_map);