headers, net: Use __kernel_sa_family_t in more definitions shared with userland

Complete the work started with commit
6602a4baf4d1a73cc4685a39ef859e1c5ddf654c ('net: Make userland include
of netlink.h more sane').

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/irda.h b/include/linux/irda.h
index 00bdad0..a014c32 100644
--- a/include/linux/irda.h
+++ b/include/linux/irda.h
@@ -26,12 +26,9 @@
 #define KERNEL_IRDA_H
 
 #include <linux/types.h>
+#include <linux/socket.h>
 
-/* 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 */
+/* Note that this file is shared with user space. */
 
 /* Hint bit positions for first hint byte */
 #define HINT_PNP         0x01
@@ -125,7 +122,7 @@
 #define LSAP_ANY              0xff
 
 struct sockaddr_irda {
-	sa_family_t sir_family;   /* AF_IRDA */
+	__kernel_sa_family_t sir_family; /* AF_IRDA */
 	__u8        sir_lsap_sel; /* LSAP selector */
 	__u32       sir_addr;     /* Device address */
 	char        sir_name[25]; /* Usually <service>:IrDA:TinyTP */