x86: mm/fault.c declare do_page_fault before they get used

declared do_page_fault() in asm-x86/trap.h for both X86_32 and X86_64

removed do_invalid_op declaration from mm/fault.c as it is already declared in asm-x86/trap.h
Signed-off-by: NJaswinder Singh <jaswinder@infradead.org>

arch/x86/mm/fault.c

@@ -35,6 +35,7 @@
 #include <asm/tlbflush.h>
 #include <asm/proto.h>
 #include <asm-generic/sections.h>
+#include <asm/traps.h>
 
 /*
  * Page fault error code bits
@@ -357,8 +358,6 @@ static int is_errata100(struct pt_regs *regs, unsigned long address)
 	return 0;
 }
 
-void do_invalid_op(struct pt_regs *, unsigned long);
-
 static int is_f00f_bug(struct pt_regs *regs, unsigned long address)
 {
 #ifdef CONFIG_X86_F00F_BUG

include/asm-x86/traps.h

@@ -51,6 +51,8 @@ void do_spurious_interrupt_bug(struct pt_regs *, long);
 unsigned long patch_espfix_desc(unsigned long, unsigned long);
 asmlinkage void math_emulate(long);
 
+void do_page_fault(struct pt_regs *regs, unsigned long error_code);
+
 #else /* CONFIG_X86_32 */
 
 asmlinkage void double_fault(void);
@@ -62,5 +64,7 @@ asmlinkage void do_coprocessor_error(struct pt_regs *);
 asmlinkage void do_simd_coprocessor_error(struct pt_regs *);
 asmlinkage void do_spurious_interrupt_bug(struct pt_regs *);
 
+asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code);
+
 #endif /* CONFIG_X86_32 */
 #endif /* _ASM_X86_TRAPS_H */