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, 27 insertions, 0 deletions

diff --git a/kernel/Documentation/devicetree/bindings/serial/vt8500-uart.txt b/kernel/Documentation/devicetree/bindings/serial/vt8500-uart.txt
new file mode 100644
index 000000000..2b64e6107
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/serial/vt8500-uart.txt
@@ -0,0 +1,27 @@
+* VIA VT8500 and WonderMedia WM8xxx UART Controller
+
+Required properties:
+- compatible: should be "via,vt8500-uart" (for VIA/WonderMedia chips up to and
+	including WM8850/WM8950), or "wm,wm8880-uart" (for WM8880 and later)
+
+- reg: base physical address of the controller and length of memory mapped
+	region.
+
+- interrupts: hardware interrupt number
+
+- clocks: shall be the input parent clock phandle for the clock. This should
+	be the 24Mhz reference clock.
+
+Aliases may be defined to ensure the correct ordering of the uarts.
+
+Example:
+	aliases {
+		serial0 = &uart0;
+	};
+
+	uart0: serial@d8200000 {
+		compatible = "via,vt8500-uart";
+		reg = <0xd8200000 0x1040>;
+		interrupts = <32>;
+		clocks = <&clkuart0>;
+	};