net/atm: Convert printk to pr_<level>

Add #define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
Remove function names from output
Use single line pr_debug instead of broken multiple uses without newline

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/atm/mpoa_proc.c b/net/atm/mpoa_proc.c
index 1a0f5cc..0603ab4 100644
--- a/net/atm/mpoa_proc.c
+++ b/net/atm/mpoa_proc.c
@@ -1,3 +1,4 @@
+#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
 
 #ifdef CONFIG_PROC_FS
 #include <linux/errno.h>
@@ -278,7 +279,7 @@
 
 	p = proc_create(STAT_FILE_NAME, 0, atm_proc_root, &mpc_file_operations);
 	if (!p) {
-		printk(KERN_ERR "Unable to initialize /proc/atm/%s\n", STAT_FILE_NAME);
+		pr_err("Unable to initialize /proc/atm/%s\n", STAT_FILE_NAME);
 		return -ENOMEM;
 	}
 	return 0;