PCI: artpec6: Make explicitly non-modular

This code is not being built as a module by anyone:

  drivers/pci/host/Kconfig:config PCIE_ARTPEC6
  drivers/pci/host/Kconfig:       bool "Axis ARTPEC-6 PCIe controller"

Remove uses of MODULE_DESCRIPTION(), MODULE_AUTHOR(), MODULE_LICENSE(),
etc., so that when reading the driver there is no doubt it is builtin-only.
The information is preserved in comments at the top of the file.

Replace module_platform_driver() with builtin_platform_driver(), which uses
the same init level priority, so init ordering is unchanged.

Note that MODULE_DEVICE_TABLE is a no-op for non-modular code.

[bhelgaas: changelog, add "Author" comment]
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Niklas Cassel <niklas.cassel@axis.com>
CC: Jesper Nilsson <jesper.nilsson@axis.com>

drivers/pci/host/pcie-artpec6.c

 /*
  * PCIe host controller driver for Axis ARTPEC-6 SoC
  *
+ * Author: Niklas Cassel <niklas.cassel@axis.com>
+ *
  * Based on work done by Phil Edworthy <phil@edworthys.org>
  *
  * This program is free software; you can redistribute it and/or modify
@@ -10,7 +12,7 @@
 
 #include <linux/delay.h>
 #include <linux/kernel.h>
-#include <linux/module.h>
+#include <linux/init.h>
 #include <linux/pci.h>
 #include <linux/platform_device.h>
 #include <linux/resource.h>
@@ -267,7 +269,6 @@ static const struct of_device_id artpec6_pcie_of_match[] = {
 	{ .compatible = "axis,artpec6-pcie", },
 	{},
 };
-MODULE_DEVICE_TABLE(of, artpec6_pcie_of_match);
 
 static struct platform_driver artpec6_pcie_driver = {
 	.probe = artpec6_pcie_probe,
@@ -276,9 +277,4 @@ static struct platform_driver artpec6_pcie_driver = {
 		.of_match_table = artpec6_pcie_of_match,
 	},
 };
-
-module_platform_driver(artpec6_pcie_driver);
-
-MODULE_AUTHOR("Niklas Cassel <niklas.cassel@axis.com>");
-MODULE_DESCRIPTION("Axis ARTPEC-6 PCIe host controller driver");
-MODULE_LICENSE("GPL v2");
+builtin_platform_driver(artpec6_pcie_driver);