[IA64] simplify notify hooks in mca.c

There are many notify_die() and almost all take same style with
ia64_mca_spin().  This patch defines macros and replace them all,
to reduce lines and to improve readability.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
diff --git a/include/asm-ia64/mca.h b/include/asm-ia64/mca.h
index f1663aa..18a4321 100644
--- a/include/asm-ia64/mca.h
+++ b/include/asm-ia64/mca.h
@@ -157,6 +157,7 @@
 struct ia64_mca_notify_die {
 	struct ia64_sal_os_state *sos;
 	int *monarch_cpu;
+	int *data;
 };
 
 DECLARE_PER_CPU(u64, ia64_mca_pal_base);