xen: Convert printks to pr_<level>

Convert printks to pr_<level> (excludes printk(KERN_DEBUG...)
to be more consistent throughout the xen subsystem.

Add pr_fmt with KBUILD_MODNAME or "xen:" KBUILD_MODNAME
Coalesce formats and add missing word spaces
Add missing newlines
Align arguments and reflow to 80 columns
Remove DRV_NAME from formats as pr_fmt adds the same content

This does change some of the prefixes of these messages
but it also does make them more consistent.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
diff --git a/drivers/xen/xen-pciback/pciback_ops.c b/drivers/xen/xen-pciback/pciback_ops.c
index b98cf0c..64eb0cd 100644
--- a/drivers/xen/xen-pciback/pciback_ops.c
+++ b/drivers/xen/xen-pciback/pciback_ops.c
@@ -3,6 +3,9 @@
  *
  *   Author: Ryan Wilson <hap9@epoch.ncsc.mil>
  */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/module.h>
 #include <linux/wait.h>
 #include <linux/bitops.h>
@@ -144,7 +147,7 @@
 	status = pci_enable_msi(dev);
 
 	if (status) {
-		pr_warn_ratelimited(DRV_NAME ": %s: error enabling MSI for guest %u: err %d\n",
+		pr_warn_ratelimited("%s: error enabling MSI for guest %u: err %d\n",
 				    pci_name(dev), pdev->xdev->otherend_id,
 				    status);
 		op->value = 0;
@@ -225,7 +228,7 @@
 						op->msix_entries[i].vector);
 		}
 	} else
-		pr_warn_ratelimited(DRV_NAME ": %s: error enabling MSI-X for guest %u: err %d!\n",
+		pr_warn_ratelimited("%s: error enabling MSI-X for guest %u: err %d!\n",
 				    pci_name(dev), pdev->xdev->otherend_id,
 				    result);
 	kfree(entries);
@@ -372,7 +375,7 @@
 		dev_data->handled++;
 		if ((dev_data->handled % 1000) == 0) {
 			if (xen_test_irq_shared(irq)) {
-				printk(KERN_INFO "%s IRQ line is not shared "
+				pr_info("%s IRQ line is not shared "
 					"with other domains. Turning ISR off\n",
 					 dev_data->irq_name);
 				dev_data->ack_intr = 0;