PCI: rcar-ep: Remove unneeded includes

Remove includes that are not needed, to speed up (re)compilation.  Include
<linux/pm_runtime.h>, which is needed, and was included implicitly through
<linux/phy/phy.h> before.

Most of these are relics from splitting the driver in a host and a common
part and adding endpoint support.

[bhelgaas: use driver tag consistent with cadence-ep, designware-ep]
Link: https://lore.kernel.org/r/7c708841a2bf84f85b14a963271c3e99c8ba38a5.1633090444.git.geert+renesas@glider.be
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>

drivers/pci/controller/pcie-rcar-ep.c

@@ -6,16 +6,13 @@
  * Author: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
  */
 
-#include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/of_address.h>
-#include <linux/of_irq.h>
-#include <linux/of_pci.h>
 #include <linux/of_platform.h>
 #include <linux/pci.h>
 #include <linux/pci-epc.h>
-#include <linux/phy/phy.h>
 #include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
 
 #include "pcie-rcar.h"