x86/apic: Make setup_local_APIC() static

This function isn't used outside of apic.c, so let's mark it static.

Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: bhe@redhat.com
Cc: ebiederm@xmission.com
Link: http://lkml.kernel.org/r/20180214062554.21020-1-douly.fnst@cn.fujitsu.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

arch/x86/include/asm/apic.h

@@ -138,7 +138,6 @@ extern void lapic_shutdown(void);
 extern void sync_Arb_IDs(void);
 extern void init_bsp_APIC(void);
 extern void apic_intr_mode_init(void);
-extern void setup_local_APIC(void);
 extern void init_apic_mappings(void);
 void register_lapic_address(unsigned long address);
 extern void setup_boot_APIC_clock(void);

arch/x86/kernel/apic/apic.c

@@ -1414,7 +1414,7 @@ static void lapic_setup_esr(void)
  * Used to setup local APIC while initializing BSP or bringing up APs.
  * Always called with preemption disabled.
  */
-void setup_local_APIC(void)
+static void setup_local_APIC(void)
 {
 	int cpu = smp_processor_id();
 	unsigned int value, queued;