[Blackfin] arch: do not use hard coded addresses

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

arch/blackfin/mach-common/interrupt.S

@@ -121,8 +121,8 @@ __common_int_entry:
 
 #if ANOMALY_05000283 || ANOMALY_05000315
 	cc = r7 == r7;
-	p5.h = 0xffc0;
-	p5.l = 0x0014;
+	p5.h = HI(CHIPID);
+	p5.l = LO(CHIPID);
 	if cc jump 1f;
 	r7.l = W[p5];
 1:
@@ -145,8 +145,8 @@ ENTRY(_evt_ivhw)
 
 #if ANOMALY_05000283
 	cc = r7 == r7;
-	p5.h = 0xffc0;
-	p5.l = 0x0014;
+	p5.h = HI(CHIPID);
+	p5.l = LO(CHIPID);
 	if cc jump 1f;
 	r7.l = W[p5];
 1: