MIPS: Quit exporting kernel internel break codes to uapi/asm/break.h

The internal codes are not part of the kernel's ABI.

Signed-off-by: David Daney <david.daney@cavium.com>
Patchwork: http://patchwork.linux-mips.org/patch/4932/


Signed-off-by: John Crispin <blogic@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>