[MIPS] Allow hardwiring of the CPU type to a single type for optimization.

This saves a few k on systems which only ever ship with a single CPU type.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/mm/dma-default.c b/arch/mips/mm/dma-default.c
index f60b3dc..98b5e5b 100644
--- a/arch/mips/mm/dma-default.c
+++ b/arch/mips/mm/dma-default.c
@@ -35,8 +35,8 @@
 static inline int cpu_is_noncoherent_r10000(struct device *dev)
 {
 	return !plat_device_is_coherent(dev) &&
-	       (current_cpu_data.cputype == CPU_R10000 ||
-	       current_cpu_data.cputype == CPU_R12000);
+	       (current_cpu_type() == CPU_R10000 ||
+	       current_cpu_type() == CPU_R12000);
 }
 
 void *dma_alloc_noncoherent(struct device *dev, size_t size,