genirq: Fix new kernel-doc warnings

Fix new irq-related kernel-doc warnings in 2.6.38:

Warning(kernel/irq/manage.c:149): No description found for parameter 'mask'
Warning(kernel/irq/manage.c:149): Excess function parameter 'cpumask' description in 'irq_set_affinity'
Warning(include/linux/irq.h:161): No description found for parameter 'state_use_accessors'
Warning(include/linux/irq.h:161): Excess struct/union/enum/typedef member 'state_use_accessor' description in 'irq_data'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
LKML-Reference: <20110318093356.b939558d.randy.dunlap@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 6e8acb7..805c6a0 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -175,7 +175,7 @@
 /**
  *	irq_set_affinity - Set the irq affinity of a given irq
  *	@irq:		Interrupt to set affinity
- *	@cpumask:	cpumask
+ *	@mask:		cpumask
  *
  */
 int irq_set_affinity(unsigned int irq, const struct cpumask *mask)