ppc64: move C declaration in ptrace.h into "ifndef __ASSEMBLY__"

The assembler gets quite confused otherwise.

include/asm-ppc64/ptrace.h

@@ -60,21 +60,21 @@ struct pt_regs32 {
 	PPC_REG_32 result; 	/* Result of a system call */
 };
 
+#define instruction_pointer(regs) ((regs)->nip)
+#ifdef CONFIG_SMP
+extern unsigned long profile_pc(struct pt_regs *regs);
+#else
+#define profile_pc(regs) instruction_pointer(regs)
 #endif
 
+#endif /* __ASSEMBLY__ */
+
 #define STACK_FRAME_OVERHEAD	112	/* size of minimum stack frame */
 
 /* Size of dummy stack frame allocated when calling signal handler. */
 #define __SIGNAL_FRAMESIZE	128
 #define __SIGNAL_FRAMESIZE32	64
 
-#define instruction_pointer(regs) ((regs)->nip)
-#ifdef CONFIG_SMP
-extern unsigned long profile_pc(struct pt_regs *regs);
-#else
-#define profile_pc(regs) instruction_pointer(regs)
-#endif
-
 #define user_mode(regs) ((((regs)->msr) >> MSR_PR_LG) & 0x1)
 
 #define force_successful_syscall_return()   \