headers, ax25: Add missing #include to <linux/netrom.h>, <linux/rose.h>

These headers use the ax25_address type defined in <linux/ax25.h>.
Signed-off-by: NBen Hutchings <ben@decadent.org.uk>
Acked-by: NRalf Baechle <ralf@linux-mips.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/linux/netrom.h

@@ -7,6 +7,8 @@
 #ifndef	NETROM_KERNEL_H
 #define	NETROM_KERNEL_H
 
+#include <linux/ax25.h>
+
 #define NETROM_MTU	236
 
 #define NETROM_T1	1

include/linux/rose.h

@@ -7,6 +7,8 @@
 #ifndef	ROSE_KERNEL_H
 #define	ROSE_KERNEL_H
 
+#include <linux/ax25.h>
+
 #define ROSE_MTU	251
 
 #define ROSE_MAX_DIGIS 6