rpmsg: Correct support for MODULE_DEVICE_TABLE()

Due to missing a missing entry in file2alias.c MODULE_DEVICE_TABLE() are
not generating the proper module aliases. Add the needed entry here.

Fixes: bcabbccabffe ("rpmsg: add virtio-based remote processor messaging bus")
Reported-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index b9beeaa..52fd54a 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -944,6 +944,17 @@ static int do_vmbus_entry(const char *filename, void *symval,
 }
 ADD_TO_DEVTABLE("vmbus", hv_vmbus_device_id, do_vmbus_entry);
 
+/* Looks like: rpmsg:S */
+static int do_rpmsg_entry(const char *filename, void *symval,
+			  char *alias)
+{
+	DEF_FIELD_ADDR(symval, rpmsg_device_id, name);
+	sprintf(alias, RPMSG_DEVICE_MODALIAS_FMT, *name);
+
+	return 1;
+}
+ADD_TO_DEVTABLE("rpmsg", rpmsg_device_id, do_rpmsg_entry);
+
 /* Looks like: i2c:S */
 static int do_i2c_entry(const char *filename, void *symval,
 			char *alias)