Squashed 'dts/upstream/' content from commit aaba2d45dc2a

git-subtree-dir: dts/upstream
git-subtree-split: aaba2d45dc2a1b3bbb710f2a3808ee1c9f340abe
diff --git a/Bindings/serial/rs485.txt b/Bindings/serial/rs485.txt
new file mode 100644
index 0000000..a7fe93e
--- /dev/null
+++ b/Bindings/serial/rs485.txt
@@ -0,0 +1 @@
+See rs485.yaml