Add udev_device_new_from_subsystem_sysname to udev, for use in Web MIDI on Linux

device/udev_linux/udev1_loader.cc

Index: device/udev_linux/udev1_loader.cc
diff --git a/device/udev_linux/udev1_loader.cc b/device/udev_linux/udev1_loader.cc
index ab741b97af0ac3b1b1b9dc805af4061dd1318a2f..34c2848e5b778561b048b96bbf3c5ab5e1f8665c 100644
--- a/device/udev_linux/udev1_loader.cc
+++ b/device/udev_linux/udev1_loader.cc
@@ -70,6 +70,14 @@ udev_device* Udev1Loader::udev_device_new_from_devnum(udev* udev,
   return lib_loader_->udev_device_new_from_devnum(udev, type, devnum);
 }
 
+udev_device* Udev1Loader::udev_device_new_from_subsystem_sysname(
+    udev* udev,
+    const char* subsystem,
+    const char* sysname) {
+  return lib_loader_->udev_device_new_from_subsystem_sysname(
+      udev, subsystem, sysname);
+}
+
 udev_device* Udev1Loader::udev_device_new_from_syspath(udev* udev,
                                                        const char* syspath) {
   return lib_loader_->udev_device_new_from_syspath(udev, syspath);