tile: use asm-generic version of <asm/local64.h>

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

arch/tile/include/asm/Kbuild

@@ -16,6 +16,7 @@ generic-y += ioctls.h
 generic-y += ipcbuf.h
 generic-y += irq_regs.h
 generic-y += local.h
+generic-y += local64.h
 generic-y += msgbuf.h
 generic-y += mutex.h
 generic-y += param.h