[IRDA]: Switching to a workqueue for the SIR work

Since sir_kthread.c pretty much duplicates the workqueue
functionality, we'd better switch.  The SIR fsm has been merged into
sir_dev.c and thus sir_kthread.c is deleted.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Samuel Ortiz <samuel.ortiz@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/irda/Makefile b/drivers/net/irda/Makefile
index 27ab75f..c1ce239 100644
--- a/drivers/net/irda/Makefile
+++ b/drivers/net/irda/Makefile
@@ -46,4 +46,4 @@
 obj-$(CONFIG_TOIM3232_DONGLE)	+= toim3232-sir.o
 
 # The SIR helper module
-sir-dev-objs := sir_dev.o sir_dongle.o sir_kthread.o
+sir-dev-objs := sir_dev.o sir_dongle.o