PCI: keystone: Reorder header file in alphabetical order

No functional change. Reorder header file in alphabetical order.
Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: NLorenzo Pieralisi <lorenzo.pieralisi@arm.com>

drivers/pci/controller/dwc/pci-keystone.c

@@ -9,19 +9,19 @@
  * Implementation based on pci-exynos.c and pcie-designware.c
  */
 
-#include <linux/irqchip/chained_irq.h>
 #include <linux/clk.h>
 #include <linux/delay.h>
+#include <linux/init.h>
 #include <linux/interrupt.h>
+#include <linux/irqchip/chained_irq.h>
 #include <linux/irqdomain.h>
-#include <linux/init.h>
 #include <linux/mfd/syscon.h>
 #include <linux/msi.h>
-#include <linux/of_irq.h>
 #include <linux/of.h>
+#include <linux/of_irq.h>
 #include <linux/of_pci.h>
-#include <linux/platform_device.h>
 #include <linux/phy/phy.h>
+#include <linux/platform_device.h>
 #include <linux/regmap.h>
 #include <linux/resource.h>
 #include <linux/signal.h>