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, 85 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-sunxi/sunxi.c b/kernel/arch/arm/mach-sunxi/sunxi.c
new file mode 100644
index 000000000..1bc811a74
--- /dev/null
+++ b/kernel/arch/arm/mach-sunxi/sunxi.c
@@ -0,0 +1,85 @@
+/*
+ * Device Tree support for Allwinner A1X SoCs
+ *
+ * Copyright (C) 2012 Maxime Ripard
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clocksource.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach/arch.h>
+
+static void __init sunxi_dt_cpufreq_init(void)
+{
+	platform_device_register_simple("cpufreq-dt", -1, NULL, 0);
+}
+
+static const char * const sunxi_board_dt_compat[] = {
+	"allwinner,sun4i-a10",
+	"allwinner,sun5i-a10s",
+	"allwinner,sun5i-a13",
+	NULL,
+};
+
+DT_MACHINE_START(SUNXI_DT, "Allwinner A1X (Device Tree)")
+	.dt_compat	= sunxi_board_dt_compat,
+	.init_late	= sunxi_dt_cpufreq_init,
+MACHINE_END
+
+static const char * const sun6i_board_dt_compat[] = {
+	"allwinner,sun6i-a31",
+	"allwinner,sun6i-a31s",
+	NULL,
+};
+
+extern void __init sun6i_reset_init(void);
+static void __init sun6i_timer_init(void)
+{
+	of_clk_init(NULL);
+	if (IS_ENABLED(CONFIG_RESET_CONTROLLER))
+		sun6i_reset_init();
+	clocksource_of_init();
+}
+
+DT_MACHINE_START(SUN6I_DT, "Allwinner sun6i (A31) Family")
+	.init_time	= sun6i_timer_init,
+	.dt_compat	= sun6i_board_dt_compat,
+	.init_late	= sunxi_dt_cpufreq_init,
+MACHINE_END
+
+static const char * const sun7i_board_dt_compat[] = {
+	"allwinner,sun7i-a20",
+	NULL,
+};
+
+DT_MACHINE_START(SUN7I_DT, "Allwinner sun7i (A20) Family")
+	.dt_compat	= sun7i_board_dt_compat,
+	.init_late	= sunxi_dt_cpufreq_init,
+MACHINE_END
+
+static const char * const sun8i_board_dt_compat[] = {
+	"allwinner,sun8i-a23",
+	NULL,
+};
+
+DT_MACHINE_START(SUN8I_DT, "Allwinner sun8i (A23) Family")
+	.dt_compat	= sun8i_board_dt_compat,
+	.init_late	= sunxi_dt_cpufreq_init,
+MACHINE_END
+
+static const char * const sun9i_board_dt_compat[] = {
+	"allwinner,sun9i-a80",
+	NULL,
+};
+
+DT_MACHINE_START(SUN9I_DT, "Allwinner sun9i Family")
+	.dt_compat	= sun9i_board_dt_compat,
+MACHINE_END