PCI: kirin: Allow removing the driver

Now that everything is in place at the poweroff sequence, this driver can
use module_platform_driver(), which allows it to be removed.

Link: https://lore.kernel.org/r/53b40494252444a9b830827922c4e3a301b8f863.1634812676.git.mchehab+huawei@kernel.org
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Lorenzo Pieralisi <[email protected]>
Signed-off-by: Bjorn Helgaas <[email protected]>
Acked-by: Xiaowei Song <[email protected]>

Author: mchehab

drivers/pci/controller/dwc/pcie-kirin.c

@@ -828,7 +828,7 @@ static struct platform_driver kirin_pcie_driver = {
 		.suppress_bind_attrs	= true,
 	},
 };
-builtin_platform_driver(kirin_pcie_driver);
+module_platform_driver(kirin_pcie_driver);
 
 MODULE_DEVICE_TABLE(of, kirin_pcie_match);
 MODULE_DESCRIPTION("PCIe host controller driver for Kirin Phone SoCs");