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>

SVN-Revision: 48266

1 files changed, 29 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.4/0021-dmaengine-bcm2835-set-residue_granularity-field.patch b/target/linux/brcm2708/patches-4.4/0021-dmaengine-bcm2835-set-residue_granularity-field.patch
new file mode 100644
index 0000000000..1e562ce8f6
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0021-dmaengine-bcm2835-set-residue_granularity-field.patch
@@ -0,0 +1,29 @@
+From 6ff0d626e7d84df71f6bc75e2c5ed35c42858bcc Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
+Date: Sat, 3 Oct 2015 15:58:59 +0200
+Subject: [PATCH 021/127] dmaengine: bcm2835: set residue_granularity field
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+bcm2835-dma supports residue reporting at burst level but didn't report
+this via the residue_granularity field.
+
+Without this field set properly we get playback issues with I2S cards.
+
+[by HiassofT, taken from bcm2708-dmaengine]
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+---
+ drivers/dma/bcm2835-dma.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/dma/bcm2835-dma.c
++++ b/drivers/dma/bcm2835-dma.c
+@@ -802,6 +802,7 @@ static int bcm2835_dma_probe(struct plat
+ 	od->ddev.src_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_4_BYTES);
+ 	od->ddev.dst_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_4_BYTES);
+ 	od->ddev.directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
++	od->ddev.residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
+ 	od->ddev.dev = &pdev->dev;
+ 	INIT_LIST_HEAD(&od->ddev.channels);
+ 	spin_lock_init(&od->lock);