[ARM] Remove asm/irq.h includes from ARM drivers

Many ARM drivers do not need to include asm/irq.h - remove this
unnecessary include from some ARM drivers.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

drivers/scsi/arm/arxescsi.c

@@ -33,7 +33,6 @@
 
 #include <asm/dma.h>
 #include <asm/io.h>
-#include <asm/irq.h>
 #include <asm/ecard.h>
 
 #include "../scsi.h"