tile: switch to generic extable.h

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

arch/tile/include/asm/Kbuild

@@ -7,6 +7,7 @@ generic-y += clkdev.h
 generic-y += emergency-restart.h
 generic-y += errno.h
 generic-y += exec.h
+generic-y += extable.h
 generic-y += fb.h
 generic-y += fcntl.h
 generic-y += hw_irq.h

arch/tile/include/asm/uaccess.h

@@ -98,24 +98,7 @@ int __range_ok(unsigned long addr, unsigned long size);
 	likely(__range_ok((unsigned long)(addr), (size)) == 0);	\
 })
 
-/*
- * The exception table consists of pairs of addresses: the first is the
- * address of an instruction that is allowed to fault, and the second is
- * the address at which the program should continue.  No registers are
- * modified, so it is entirely up to the continuation code to figure out
- * what to do.
- *
- * All the routines below use bits of fixup code that are out of line
- * with the main instruction path.  This means when everything is well,
- * we don't even have to jump over them.  Further, they do not intrude
- * on our cache or tlb entries.
- */
-
-struct exception_table_entry {
-	unsigned long insn, fixup;
-};
-
-extern int fixup_exception(struct pt_regs *regs);
+#include <asm/extable.h>
 
 /*
  * This is a type: either unsigned long, if the argument fits into