sync with OpenBSD -current

sys/dev/pci/drm/include/linux/platform_device.h

@@ -0,0 +1,53 @@
+/* Public domain. */
+
+#ifndef _LINUX_PLATFORM_DEVICE_H
+#define _LINUX_PLATFORM_DEVICE_H
+
+#include <linux/device.h>
+
+struct platform_driver;
+
+struct platform_device {
+	struct device dev;
+	int num_resources;
+	struct resource *resource;
+	struct device *parent;
+	bus_dma_tag_t dmat;
+	int node;
+
+#ifdef __HAVE_FDT
+	struct fdt_attach_args *faa;
+#endif
+
+	LIST_ENTRY(platform_device) next;
+};
+
+#define to_platform_device(p)	(struct platform_device *)(p)
+
+extern struct bus_type platform_bus_type;
+
+void __iomem *
+devm_platform_ioremap_resource_byname(struct platform_device *, const char *);
+
+inline void
+platform_set_drvdata(struct platform_device *pdev, void *data)
+{
+	dev_set_drvdata(&pdev->dev, data);
+}
+
+inline void *
+platform_get_drvdata(struct platform_device *pdev)
+{
+	return dev_get_drvdata(&pdev->dev);
+}
+
+inline int
+platform_driver_register(struct platform_driver *platform_drv)
+{
+	return 0;
+}
+
+void	platform_device_register(struct platform_device *);
+struct resource *platform_get_resource(struct platform_device *, u_int, u_int);
+
+#endif