Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/kernel/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt b/kernel/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt
new file mode 100644
index 000000000..af0b903de
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt
@@ -0,0 +1,18 @@
+USB GPIO Extcon device
+
+This is a virtual device used to generate USB cable states from the USB ID pin
+connected to a GPIO pin.
+
+Required properties:
+- compatible: Should be "linux,extcon-usb-gpio"
+- id-gpio: gpio for USB ID pin. See gpio binding.
+
+Example: Examples of extcon-usb-gpio node in dra7-evm.dts as listed below:
+	extcon_usb1 {
+		compatible = "linux,extcon-usb-gpio";
+		id-gpio = <&gpio6 1 GPIO_ACTIVE_HIGH>;
+	}
+
+	&omap_dwc3_1 {
+		extcon = <&extcon_usb1>;
+	};