irqchip: bcm7120-l2: Fix missing nibble in gc->unused mask

This mask should have been 0xffff_ffff, not 0x0fff_ffff.

The change should not have an effect on current users (STB) because bits
31:27 are unused.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lkml.kernel.org/r/1415342669-30640-10-git-send-email-cernekee@gmail.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

drivers/irqchip/irq-bcm7120-l2.c

@@ -171,7 +171,7 @@ int __init bcm7120_l2_intc_of_init(struct device_node *dn,
 	}
 
 	gc = irq_get_domain_generic_chip(data->domain, 0);
-	gc->unused = 0xfffffff & ~data->irq_map_mask;
+	gc->unused = 0xffffffff & ~data->irq_map_mask;
 	gc->reg_base = data->base;
 	gc->private = data;
 	ct = gc->chip_types;