Fix breakage of 8xx boards from recent commit.

This patch fixes the negative consequences for 8xx of the recent
"ppc4xx: Clean up 440 exceptions handling" commit.

Signed-off-by: Rafal Jaworowski <raj@semihalf.com>

include/asm-ppc/processor.h

@@ -628,6 +628,12 @@
 #define MAS6	SPRN_MAS6
 #define MAS7	SPRN_MAS7
 
+#if defined(CONFIG_4xx) || defined(CONFIG_44x) || defined(CONFIG_MPC85xx)
+#define DAR_DEAR DEAR
+#else
+#define DAR_DEAR DAR
+#endif
+
 /* Device Control Registers */
 
 #define DCRN_BEAR	0x090	/* Bus Error Address Register */