x86/mm/pat: Mark __cpa_flush_tlb() as static

Signed-off-by: kbuild test robot <[e-mail]>
Link: https://lkml.kernel.org/r/20191123153023.bj6m66scjeubhbjg@4978f4969bb8
Signed-off-by: Ingo Molnar <[e-mail]>

arch/x86/mm/pat/set_memory.c

···
 	on_each_cpu(__cpa_flush_all, (void *) cache, 1);
 }
 
-void __cpa_flush_tlb(void *data)
+static void __cpa_flush_tlb(void *data)
 {
 	struct cpa_data *cpa = data;
 	unsigned int i;