x86: irq: Remove chipset specific irq router drivers

At present there are 3 irq router drivers. One is the common one
and the other two are chipset specific for queensbay and quark.
However these are really the same drivers as the core logic is
the same. The two chipset specific drivers configure some registers
that are outside the irq router block which should really be part
of the chipset initialization.

Now we remove these specific drivers and make all x86 boards use
the common one.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/x86/cpu/irq.c b/arch/x86/cpu/irq.c
index 305cd3d..a1d6a84 100644
--- a/arch/x86/cpu/irq.c
+++ b/arch/x86/cpu/irq.c
@@ -237,7 +237,7 @@
 	}
 }
 
-int irq_router_common_init(struct udevice *dev)
+int irq_router_probe(struct udevice *dev)
 {
 	int ret;
 
@@ -256,11 +256,6 @@
 	return 0;
 }
 
-int irq_router_probe(struct udevice *dev)
-{
-	return irq_router_common_init(dev);
-}
-
 ulong write_pirq_routing_table(ulong addr)
 {
 	if (!gd->arch.pirq_routing_table)