x86: ldt.c declare sys_modify_ldt before they get used

Impact: cleanup

In asm/syscalls.h moved out sys_modify_ldt from CONFIG_X86_32 as it is
common for both 32 and 64 bit.
Signed-off-by: NJaswinder Singh <jaswinder@infradead.org>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

arch/x86/include/asm/syscalls.h

@@ -19,6 +19,9 @@
 /* kernel/ioport.c */
 asmlinkage long sys_ioperm(unsigned long, unsigned long, int);
 
+/* kernel/ldt.c */
+asmlinkage int sys_modify_ldt(int, void __user *, unsigned long);
+
 /* X86_32 only */
 #ifdef CONFIG_X86_32
 /* kernel/process_32.c */
@@ -38,9 +41,6 @@ asmlinkage int sys_rt_sigreturn(unsigned long);
 /* kernel/ioport.c */
 asmlinkage long sys_iopl(unsigned long);
 
-/* kernel/ldt.c */
-asmlinkage int sys_modify_ldt(int, void __user *, unsigned long);
-
 /* kernel/sys_i386_32.c */
 asmlinkage long sys_mmap2(unsigned long, unsigned long, unsigned long,
 			  unsigned long, unsigned long, unsigned long);