Fix PIRQ routing abstraction

intel_irq_routing_table is a local structure that should not be used
globally, because it might not be there on all mainboards.

Instead, the API has to be corrected to allow passing a PIRQ table in
where needed.

Change-Id: Icf08928b67727a366639b648bf6aac8e1a87e765
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1862
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
diff --git a/src/mainboard/intel/d810e2cb/irq_tables.c b/src/mainboard/intel/d810e2cb/irq_tables.c
index c7c0d7b..9788143 100644
--- a/src/mainboard/intel/d810e2cb/irq_tables.c
+++ b/src/mainboard/intel/d810e2cb/irq_tables.c
@@ -20,7 +20,7 @@
 
 #include <arch/pirq_routing.h>
 
-const struct irq_routing_table intel_irq_routing_table = {
+static const struct irq_routing_table intel_irq_routing_table = {
 	PIRQ_SIGNATURE,		/* u32 signature */
 	PIRQ_VERSION,		/* u16 version */
 	32 + 16 * CONFIG_IRQ_SLOT_COUNT, /* Max. number of devices on the bus (7)*/
@@ -49,5 +49,5 @@
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
-	return copy_pirq_routing_table(addr);
+	return copy_pirq_routing_table(addr, &intel_irq_routing_table);
 }