net/caif: Use pr_fmt

This patch standardizes caif message logging prefixes.

Add #define pr_fmt(fmt) KBUILD_MODNAME ":%s(): " fmt, __func__
Add missing "\n"s to some logging messages
Convert pr_warning to pr_warn

This changes the logging message prefix from CAIF: to caif:
for all uses but caif_socket.c and chnl_net.c.  Those now use
their filename without extension.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/caif/cfrfml.c b/net/caif/cfrfml.c
index eb16020..6acaeba 100644
--- a/net/caif/cfrfml.c
+++ b/net/caif/cfrfml.c
@@ -4,6 +4,8 @@
  * License terms: GNU General Public License (GPL) version 2
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ":%s(): " fmt, __func__
+
 #include <linux/stddef.h>
 #include <linux/spinlock.h>
 #include <linux/slab.h>
@@ -48,7 +50,7 @@
 		kzalloc(sizeof(struct cfrfml), GFP_ATOMIC);
 
 	if (!this) {
-		pr_warning("CAIF: %s(): Out of memory\n", __func__);
+		pr_warn("Out of memory\n");
 		return NULL;
 	}
 
@@ -178,9 +180,7 @@
 			cfpkt_destroy(rfml->incomplete_frm);
 		rfml->incomplete_frm = NULL;
 
-		pr_info("CAIF: %s(): "
-				"Connection error %d triggered on RFM link\n",
-				__func__, err);
+		pr_info("Connection error %d triggered on RFM link\n", err);
 
 		/* Trigger connection error upon failure.*/
 		layr->up->ctrlcmd(layr->up, CAIF_CTRLCMD_REMOTE_SHUTDOWN_IND,
@@ -280,9 +280,7 @@
 out:
 
 	if (err != 0) {
-		pr_info("CAIF: %s(): "
-				"Connection error %d triggered on RFM link\n",
-				__func__, err);
+		pr_info("Connection error %d triggered on RFM link\n", err);
 		/* Trigger connection error upon failure.*/
 
 		layr->up->ctrlcmd(layr->up, CAIF_CTRLCMD_REMOTE_SHUTDOWN_IND,