xtensa: switch to generic extable.h

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

arch/xtensa/include/asm/Kbuild

@@ -6,6 +6,7 @@ generic-y += dma-contiguous.h
 generic-y += emergency-restart.h
 generic-y += errno.h
 generic-y += exec.h
+generic-y += extable.h
 generic-y += fcntl.h
 generic-y += hardirq.h
 generic-y += ioctl.h

arch/xtensa/include/asm/uaccess.h

@@ -18,6 +18,7 @@
 
 #include <linux/prefetch.h>
 #include <asm/types.h>
+#include <asm/extable.h>
 
 /*
  * The fs value determines whether argument validity checking should
@@ -342,10 +343,4 @@ static inline long strnlen_user(const char *str, long len)
 	return __strnlen_user(str, len);
 }
 
-
-struct exception_table_entry
-{
-	unsigned long insn, fixup;
-};
-
 #endif	/* _XTENSA_UACCESS_H */