MN10300: ASB2364: Handle the IRQ multiplexer in the FPGA

Handle the IRQ multiplexer in the FPGA by implementing a cascade interrupt
driver for it.

Signed-off-by: David Howells <dhowells@redhat.com>
diff --git a/arch/mn10300/unit-asb2364/Makefile b/arch/mn10300/unit-asb2364/Makefile
index 6dd27d6..e9d9b90 100644
--- a/arch/mn10300/unit-asb2364/Makefile
+++ b/arch/mn10300/unit-asb2364/Makefile
@@ -7,4 +7,4 @@
 #
 # Note 2! The CFLAGS definitions are now in the main makefile...
 
-obj-y   := unit-init.o leds.o
+obj-y   := unit-init.o leds.o irq-fpga.o