[POWERPC] Fix 8xx build breakage due to _tlbie changes

My changes to _tlbie to fix 4xx unfortunately broke 8xx build in a
couple of places.  This fixes it.

Spotted by Olof Johansson.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Vitaly Bordug <vitb@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h
index eb3a732..ebfd13d 100644
--- a/arch/powerpc/mm/mmu_decl.h
+++ b/arch/powerpc/mm/mmu_decl.h
@@ -56,7 +56,7 @@
  * architectures.  -- Dan
  */
 #if defined(CONFIG_8xx)
-#define flush_HPTE(X, va, pg)	_tlbie(va)
+#define flush_HPTE(X, va, pg)	_tlbie(va, 0 /* 8xx doesn't care about PID */)
 #define MMU_init_hw()		do { } while(0)
 #define mmu_mapin_ram()		(0UL)