[IrDA] include cleanup

	o [CORRECT] Cleanup cruft from <linux/irda.h>

drivers/net/irda/old_belkin.c

@@ -32,8 +32,6 @@
 #include <linux/delay.h>
 #include <linux/tty.h>
 #include <linux/init.h>
-#include <linux/net.h>
-#include <linux/irda.h>
 
 #include <net/irda/irda.h>
 #include <net/irda/irda_device.h>

include/linux/irda.h

@@ -25,7 +25,11 @@
 #ifndef KERNEL_IRDA_H
 #define KERNEL_IRDA_H
 
-#include <linux/socket.h> /* only for sa_family_t */
+/* Please do *not* add any #include in this file, this file is
+ * included as-is in user space.
+ * Please fix the calling file to properly included needed files before
+ * this one, or preferably to include <net/irda/irda.h> instead.
+ * Jean II */
 
 /* Hint bit positions for first hint byte */
 #define HINT_PNP         0x01