net: core: Use pr_<level>

Use the current logging style.

This enables use of dynamic debugging as well.

Convert printk(KERN_<LEVEL> to pr_<level>.
Add pr_fmt. Remove embedded prefixes, use
%s, __func__ instead.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/netprio_cgroup.c b/net/core/netprio_cgroup.c
index ba6900f..09eda68 100644
--- a/net/core/netprio_cgroup.c
+++ b/net/core/netprio_cgroup.c
@@ -9,6 +9,8 @@
  * Authors:	Neil Horman <nhorman@tuxdriver.com>
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/types.h>
@@ -88,7 +90,7 @@
 	old_priomap  = rtnl_dereference(dev->priomap);
 
 	if (!new_priomap) {
-		printk(KERN_WARNING "Unable to alloc new priomap!\n");
+		pr_warn("Unable to alloc new priomap!\n");
 		return;
 	}
 
@@ -136,7 +138,7 @@
 
 	ret = get_prioidx(&cs->prioidx);
 	if (ret != 0) {
-		printk(KERN_WARNING "No space in priority index array\n");
+		pr_warn("No space in priority index array\n");
 		kfree(cs);
 		return ERR_PTR(ret);
 	}