brcm2708: update linux 4.4 patches to latest version

As usual these patches were extracted and rebased from the raspberry pi repo:
https://github.com/raspberrypi/linux/tree/rpi-4.4.y

Also adds support for Raspberry Pi Compute Module 3 (untested).

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 40 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.4/0317-pinctrl-bcm2835-Return-pins-to-inputs-when-freed.patch b/target/linux/brcm2708/patches-4.4/0317-pinctrl-bcm2835-Return-pins-to-inputs-when-freed.patch
new file mode 100644
index 0000000..685cd79
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0317-pinctrl-bcm2835-Return-pins-to-inputs-when-freed.patch
@@ -0,0 +1,40 @@
+From 550960c37d5de04808943e9ae6cecb16ad003070 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Fri, 6 May 2016 12:32:47 +0100
+Subject: [PATCH] pinctrl-bcm2835: Return pins to inputs when freed
+
+When dynamically unloading overlays, it is important that freed pins are
+restored to being inputs to prevent functions from being enabled in
+multiple places at once.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/pinctrl/bcm/pinctrl-bcm2835.c | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+--- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c
++++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
+@@ -831,6 +831,15 @@ static const struct pinctrl_ops bcm2835_
+ 	.dt_free_map = bcm2835_pctl_dt_free_map,
+ };
+ 
++static void bcm2835_pmx_free(struct pinctrl_dev *pctldev,
++		unsigned offset)
++{
++	struct bcm2835_pinctrl *pc = pinctrl_dev_get_drvdata(pctldev);
++
++	/* disable by setting to GPIO_IN */
++	bcm2835_pinctrl_fsel_set(pc, offset, BCM2835_FSEL_GPIO_IN);
++}
++
+ static int bcm2835_pmx_get_functions_count(struct pinctrl_dev *pctldev)
+ {
+ 	return BCM2835_FSEL_COUNT;
+@@ -890,6 +899,7 @@ static int bcm2835_pmx_gpio_set_directio
+ }
+ 
+ static const struct pinmux_ops bcm2835_pmx_ops = {
++	.free = bcm2835_pmx_free,
+ 	.get_functions_count = bcm2835_pmx_get_functions_count,
+ 	.get_function_name = bcm2835_pmx_get_function_name,
+ 	.get_function_groups = bcm2835_pmx_get_function_groups,