powerpc/476: add machine check handler for 47x core

The 47x core's MCSR varies from 44x, so it needs it's own machine check
handler.

Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h
index 97ab508..e3cba4e 100644
--- a/arch/powerpc/include/asm/cputable.h
+++ b/arch/powerpc/include/asm/cputable.h
@@ -72,6 +72,7 @@
 extern int machine_check_440A(struct pt_regs *regs);
 extern int machine_check_e500(struct pt_regs *regs);
 extern int machine_check_e200(struct pt_regs *regs);
+extern int machine_check_47x(struct pt_regs *regs);
 
 /* NOTE WELL: Update identify_cpu() if fields are added or removed! */
 struct cpu_spec {