brcm2708: add linux 4.4 support

- random-bcm2708 and spi-bcm2708 have been removed.
- sound-soc-bcm2708-i2s has been upstreamed as sound-soc-bcm2835-i2s.

Let's keep linux 4.1 for a while, since linux 4.4 appears to have some issues
with multicast traffic on RPi ethernet:
https://gist.github.com/Noltari/5b1cfdecce5ed4bc08fd

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@48266 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 33 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.4/0100-drm-vc4-Remove-extra-barrier-s-aroudn-CTnCA-CTnEA-se.patch b/target/linux/brcm2708/patches-4.4/0100-drm-vc4-Remove-extra-barrier-s-aroudn-CTnCA-CTnEA-se.patch
new file mode 100644
index 0000000000..0ea1ee7234
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0100-drm-vc4-Remove-extra-barrier-s-aroudn-CTnCA-CTnEA-se.patch
@@ -0,0 +1,33 @@
+From 65854b72066317cb2896df184794890c32f5f1bb Mon Sep 17 00:00:00 2001
+From: Eric Anholt <eric@anholt.net>
+Date: Fri, 23 Oct 2015 12:33:43 +0100
+Subject: [PATCH 100/127] drm/vc4: Remove extra barrier()s aroudn CTnCA/CTnEA
+ setup.
+
+The writel() that these expand to already does barriers.
+
+Signed-off-by: Eric Anholt <eric@anholt.net>
+---
+ drivers/gpu/drm/vc4/vc4_gem.c | 9 +++------
+ 1 file changed, 3 insertions(+), 6 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_gem.c
++++ b/drivers/gpu/drm/vc4/vc4_gem.c
+@@ -104,14 +104,11 @@ submit_cl(struct drm_device *dev, uint32
+ {
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 
+-	V3D_WRITE(V3D_CTNCA(thread), start);
+-	barrier();
+-
+-	/* Set the end address of the control list.  Writing this
+-	 * register is what starts the job.
++	/* Set the current and end address of the control list.
++	 * Writing the end register is what starts the job.
+ 	 */
++	V3D_WRITE(V3D_CTNCA(thread), start);
+ 	V3D_WRITE(V3D_CTNEA(thread), end);
+-	barrier();
+ }
+ 
+ int