regulator: fixed: Add support to handle enable-active-high DT property

Add support to handle enable-active-high DT property. This property is
used to drive the gpio controlling fixed regulator as active high when
claiming gpio line.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/doc/device-tree-bindings/regulator/fixed.txt b/doc/device-tree-bindings/regulator/fixed.txt
index 8a0d002..5fd9033 100644
--- a/doc/device-tree-bindings/regulator/fixed.txt
+++ b/doc/device-tree-bindings/regulator/fixed.txt
@@ -12,6 +12,9 @@
 - gpio: GPIO to use for enable control
 - startup-delay-us: startup time in microseconds
 - regulator constraints (binding info: regulator.txt)
+- enable-active-high: Polarity of GPIO is Active high. If this property
+  is missing, the default assumed is Active low.
+
 
 Other kernel-style properties, are currently not used.
 
@@ -36,4 +39,5 @@
 	regulator-max-microamp = <15000>;
 	regulator-always-on;
 	regulator-boot-on;
+	enable-active-high;
 };