ipq806x: Add support for linux-4.4

1)Changes

- Rebased the patches for linux-4.4.7
- Added patch to fix spi nor fifo and dma support
- Added patch to configure watchdog barktime

2)Testing

Tested on IPQ AP148 Board:
 a. NOR boot and NAND boot
 b. ethernet network and ath10k wifi
 c. ubi sysupgrade

UnTested
 dwc3 usb has not been validated on IPQ board(AP148)

3)Known Issues:
 Once we flash ubi image on AP148, and if we reset the board, uboot on
 first boot creates PEB and LEB for dynamic sized partitions, which is incorrect
 and not what linux expects which causes errors when trying to mount rootfs.
 In order to test this, we can use the below steps:
  a. Flash the ubi image on board and don't reset the board
  b. load the kernel fit image in RAM and boot from there.

Signed-off-by: Ram Chandra Jangir <rjangi@codeaurora.org>

1 files changed, 0 insertions, 62 deletions

diff --git a/target/linux/ipq806x/patches-3.18/152-dmaengine-Make-channel-allocation-callbacks-optional.patch b/target/linux/ipq806x/patches-3.18/152-dmaengine-Make-channel-allocation-callbacks-optional.patch
deleted file mode 100644
index 63372594d8..0000000000
--- a/target/linux/ipq806x/patches-3.18/152-dmaengine-Make-channel-allocation-callbacks-optional.patch
+++ /dev/null
@@ -1,62 +0,0 @@
-From c4b54a648e682f678c338619df848233a6babc46 Mon Sep 17 00:00:00 2001
-From: Maxime Ripard <maxime.ripard@free-electrons.com>
-Date: Mon, 17 Nov 2014 14:41:59 +0100
-Subject: [PATCH] dmaengine: Make channel allocation callbacks optional
-
-Nowadays, some drivers don't have anything in there channel allocation
-callbacks anymore.
-
-Remove the BUG_ON if those callbacks aren't implemented, in order to allow
-drivers to not implement them.
-
-Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
-Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
-Signed-off-by: Vinod Koul <vinod.koul@intel.com>
----
- drivers/dma/dmaengine.c | 18 +++++++++++-------
- 1 file changed, 11 insertions(+), 7 deletions(-)
-
---- a/drivers/dma/dmaengine.c
-+++ b/drivers/dma/dmaengine.c
-@@ -235,9 +235,11 @@ static int dma_chan_get(struct dma_chan
- 		return -ENODEV;
- 
- 	/* allocate upon first client reference */
--	ret = chan->device->device_alloc_chan_resources(chan);
--	if (ret < 0)
--		goto err_out;
-+	if (chan->device->device_alloc_chan_resources) {
-+		ret = chan->device->device_alloc_chan_resources(chan);
-+		if (ret < 0)
-+			goto err_out;
-+	}
- 
- 	if (!dma_has_cap(DMA_PRIVATE, chan->device->cap_mask))
- 		balance_ref_count(chan);
-@@ -259,11 +261,15 @@ err_out:
-  */
- static void dma_chan_put(struct dma_chan *chan)
- {
-+	/* This channel is not in use, bail out */
- 	if (!chan->client_count)
--		return; /* this channel failed alloc_chan_resources */
-+		return;
-+
- 	chan->client_count--;
- 	module_put(dma_chan_to_owner(chan));
--	if (chan->client_count == 0)
-+
-+	/* This channel is not in use anymore, free it */
-+	if (!chan->client_count && chan->device->device_free_chan_resources)
- 		chan->device->device_free_chan_resources(chan);
- }
- 
-@@ -817,8 +823,6 @@ int dma_async_device_register(struct dma
- 	BUG_ON(dma_has_cap(DMA_INTERLEAVE, device->cap_mask) &&
- 		!device->device_prep_interleaved_dma);
- 
--	BUG_ON(!device->device_alloc_chan_resources);
--	BUG_ON(!device->device_free_chan_resources);
- 	BUG_ON(!device->device_tx_status);
- 	BUG_ON(!device->device_issue_pending);
- 	BUG_ON(!device->dev);