powerpc: remove the second argument of k[un]map_atomic()

Signed-off-by: Cong Wang <amwang@redhat.com>
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index d974b79..baaafde 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -458,9 +458,9 @@
 #endif
 #ifdef CONFIG_BOOKE
 	{
-		void *start = kmap_atomic(page, KM_PPC_SYNC_ICACHE);
+		void *start = kmap_atomic(page);
 		__flush_dcache_icache(start);
-		kunmap_atomic(start, KM_PPC_SYNC_ICACHE);
+		kunmap_atomic(start);
 	}
 #elif defined(CONFIG_8xx) || defined(CONFIG_PPC64)
 	/* On 8xx there is no need to kmap since highmem is not supported */