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/cfsrvl.c b/net/caif/cfsrvl.c
index f40939a..ab5e542 100644
--- a/net/caif/cfsrvl.c
+++ b/net/caif/cfsrvl.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/kernel.h>
 #include <linux/types.h>
 #include <linux/errno.h>
@@ -79,8 +81,7 @@
 		layr->up->ctrlcmd(layr->up, ctrl, phyid);
 		break;
 	default:
-		pr_warning("CAIF: %s(): "
-			   "Unexpected ctrl in cfsrvl (%d)\n", __func__, ctrl);
+		pr_warn("Unexpected ctrl in cfsrvl (%d)\n", ctrl);
 		/* We have both modem and phy flow on, send flow on */
 		layr->up->ctrlcmd(layr->up, ctrl, phyid);
 		service->phy_flow_on = true;
@@ -107,14 +108,12 @@
 			u8 flow_on = SRVL_FLOW_ON;
 			pkt = cfpkt_create(SRVL_CTRL_PKT_SIZE);
 			if (!pkt) {
-				pr_warning("CAIF: %s(): Out of memory\n",
-					__func__);
+				pr_warn("Out of memory\n");
 				return -ENOMEM;
 			}
 
 			if (cfpkt_add_head(pkt, &flow_on, 1) < 0) {
-				pr_err("CAIF: %s(): Packet is erroneous!\n",
-					__func__);
+				pr_err("Packet is erroneous!\n");
 				cfpkt_destroy(pkt);
 				return -EPROTO;
 			}
@@ -131,14 +130,12 @@
 			u8 flow_off = SRVL_FLOW_OFF;
 			pkt = cfpkt_create(SRVL_CTRL_PKT_SIZE);
 			if (!pkt) {
-				pr_warning("CAIF: %s(): Out of memory\n",
-					__func__);
+				pr_warn("Out of memory\n");
 				return -ENOMEM;
 			}
 
 			if (cfpkt_add_head(pkt, &flow_off, 1) < 0) {
-				pr_err("CAIF: %s(): Packet is erroneous!\n",
-					__func__);
+				pr_err("Packet is erroneous!\n");
 				cfpkt_destroy(pkt);
 				return -EPROTO;
 			}