MIPS: mm: Move UNIQUE_ENTRYHI macro to a header file

The UNIQUE_ENTRYHI definition was duplicated whenever there
was the need to flush the TLB entries. We move this common
definition to a header file.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/6129/

arch/mips/include/asm/tlb.h

@@ -18,6 +18,8 @@
  */
 #define tlb_flush(tlb) flush_tlb_mm((tlb)->mm)
 
+#define UNIQUE_ENTRYHI(idx)	(CKSEG0 + ((idx) << (PAGE_SHIFT + 1)))
+
 #include <asm-generic/tlb.h>
 
 #endif /* __ASM_TLB_H */