Unify Local APIC address definitions

We used several names for that same value, and hardcoded the value
at some more places.

They're all LOCAL_APIC_ADDR now (except for lapic specific code
that still uses LAPIC_DEFAULT_BASE).

Change-Id: I1d4be73b1984f22b7e84681edfadf0588a7589b6
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/676
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/mainboard/intel/xe7501devkit/mptable.c

@@ -122,7 +122,7 @@ static void *smp_write_config_table(void* v)
 
 	mc = (void *)(((char *)v) + SMP_FLOATING_TABLE_LEN);
 
-	mptable_init(mc, LAPIC_ADDR);
+	mptable_init(mc, LOCAL_APIC_ADDR);
 
 	smp_write_processors(mc);