Blackfin arch: Some memory and code optimizations - Fix SYS_IRQS

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

diff --git a/arch/blackfin/mach-common/ints-priority-dc.c b/arch/blackfin/mach-common/ints-priority-dc.c
index ceb61d9..7977c2c 100644
--- a/arch/blackfin/mach-common/ints-priority-dc.c
+++ b/arch/blackfin/mach-common/ints-priority-dc.c
@@ -396,7 +396,7 @@
 	bfin_write_EVT15(evt_system_call);
 	CSYNC();
 
-	for (irq = 0; irq < SYS_IRQS; irq++) {
+	for (irq = 0; irq <= SYS_IRQS; irq++) {
 		if (irq <= IRQ_CORETMR)
 			set_irq_chip(irq, &bf561_core_irqchip);
 		else