x86: apic - use SET_APIC_DEST_FIELD instead of hardcoded shift

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/kernel/apic_64.c b/arch/x86/kernel/apic_64.c
index 69a876b..77c5e5e 100644
--- a/arch/x86/kernel/apic_64.c
+++ b/arch/x86/kernel/apic_64.c
@@ -150,7 +150,7 @@
 
 void xapic_icr_write(u32 low, u32 id)
 {
-	apic_write(APIC_ICR2, id << 24);
+	apic_write(APIC_ICR2, SET_APIC_DEST_FIELD(id));
 	apic_write(APIC_ICR, low);
 }