[ARM] Fix cosmetic typo in asm/irq.h

The IRQ resource flags are IORESOURCE_IRQ not IRQRESOURCE_IRQ.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

include/asm-arm/irq.h

@@ -27,7 +27,7 @@ extern void enable_irq(unsigned int);
 
 /*
  * These correspond with the SA_TRIGGER_* defines, and therefore the
- * IRQRESOURCE_IRQ_* defines.
+ * IORESOURCE_IRQ_* defines.
  */
 #define __IRQT_RISEDGE	(1 << 0)
 #define __IRQT_FALEDGE	(1 << 1)