x86/traps: Make math_error() static

Trivial, make math_error() static.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>

arch/x86/include/asm/traps.h

@@ -98,7 +98,6 @@ static inline int get_si_code(unsigned long condition)
 
 extern int panic_on_unrecovered_nmi;
 
-void math_error(struct pt_regs *, int, int);
 void math_emulate(struct math_emu_info *);
 #ifndef CONFIG_X86_32
 asmlinkage void smp_thermal_interrupt(void);

arch/x86/kernel/traps.c

@@ -488,7 +488,7 @@ dotraplinkage void __kprobes do_debug(struct pt_regs *regs, long error_code)
  * the correct behaviour even in the presence of the asynchronous
  * IRQ13 behaviour
  */
-void math_error(struct pt_regs *regs, int error_code, int trapnr)
+static void math_error(struct pt_regs *regs, int error_code, int trapnr)
 {
 	struct task_struct *task = current;
 	siginfo_t info;