net: caif: added cfserl_release function

Added cfserl_release() function.

Cc: [e-mail]
Signed-off-by: Pavel Skripkin <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

include/net/caif/cfserl.h

···
 #include <net/caif/caif_layer.h>
 
 struct cflayer *cfserl_create(int instance, bool use_stx);
+void cfserl_release(struct cflayer *layer);
 #endif

net/caif/cfserl.c

···
 static void cfserl_ctrlcmd(struct cflayer *layr, enum caif_ctrlcmd ctrl,
 			   int phyid);
 
+void cfserl_release(struct cflayer *layer)
+{
+	kfree(layer);
+}
+
 struct cflayer *cfserl_create(int instance, bool use_stx)
 {
 	struct cfserl *this = kzalloc(sizeof(struct cfserl), GFP_ATOMIC);