add asm-generic/extable.h

... and make the users of generic uaccess.h use that.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

arch/arc/include/asm/Kbuild

@@ -6,6 +6,7 @@ generic-y += device.h
 generic-y += div64.h
 generic-y += emergency-restart.h
 generic-y += errno.h
+generic-y += extable.h
 generic-y += fb.h
 generic-y += fcntl.h
 generic-y += ftrace.h

arch/arc/include/asm/uaccess.h

@@ -750,6 +750,4 @@ extern long arc_strnlen_user_noinline(const char __user *src, long n);
 
 #include <asm-generic/uaccess.h>
 
-extern int fixup_exception(struct pt_regs *regs);
-
 #endif