Squashed 'dts/upstream/' content from commit aaba2d45dc2a

git-subtree-dir: dts/upstream
git-subtree-split: aaba2d45dc2a1b3bbb710f2a3808ee1c9f340abe
diff --git a/Bindings/regulator/regulator.txt b/Bindings/regulator/regulator.txt
new file mode 100644
index 0000000..487ccd8
--- /dev/null
+++ b/Bindings/regulator/regulator.txt
@@ -0,0 +1 @@
+This file has moved to regulator.yaml.