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/cfveil.c b/net/caif/cfveil.c
index 77cc09f..3b425b1 100644
--- a/net/caif/cfveil.c
+++ b/net/caif/cfveil.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/slab.h>
 #include <net/caif/caif_layer.h>
@@ -25,7 +27,7 @@
 {
 	struct cfsrvl *vei = kmalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
 	if (!vei) {
-		pr_warning("CAIF: %s(): Out of memory\n", __func__);
+		pr_warn("Out of memory\n");
 		return NULL;
 	}
 	caif_assert(offsetof(struct cfsrvl, layer) == 0);
@@ -47,7 +49,7 @@
 
 
 	if (cfpkt_extr_head(pkt, &cmd, 1) < 0) {
-		pr_err("CAIF: %s(): Packet is erroneous!\n", __func__);
+		pr_err("Packet is erroneous!\n");
 		cfpkt_destroy(pkt);
 		return -EPROTO;
 	}
@@ -67,8 +69,7 @@
 		cfpkt_destroy(pkt);
 		return 0;
 	default:		/* SET RS232 PIN */
-		pr_warning("CAIF: %s():Unknown VEI control packet %d (0x%x)!\n",
-			   __func__, cmd, cmd);
+		pr_warn("Unknown VEI control packet %d (0x%x)!\n", cmd, cmd);
 		cfpkt_destroy(pkt);
 		return -EPROTO;
 	}
@@ -86,7 +87,7 @@
 	caif_assert(layr->dn->transmit != NULL);
 
 	if (cfpkt_add_head(pkt, &tmp, 1) < 0) {
-		pr_err("CAIF: %s(): Packet is erroneous!\n", __func__);
+		pr_err("Packet is erroneous!\n");
 		return -EPROTO;
 	}