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, 70 deletions

diff --git a/target/linux/ipq806x/patches-3.18/150-dmaengine-Rework-dma_chan_get.patch b/target/linux/ipq806x/patches-3.18/150-dmaengine-Rework-dma_chan_get.patch
deleted file mode 100644
index 880e67c..0000000
--- a/target/linux/ipq806x/patches-3.18/150-dmaengine-Rework-dma_chan_get.patch
+++ /dev/null
@@ -1,70 +0,0 @@
-From d2f4f99db3e9ec8b063cf2e45704e2bb95428317 Mon Sep 17 00:00:00 2001
-From: Maxime Ripard <maxime.ripard@free-electrons.com>
-Date: Mon, 17 Nov 2014 14:41:58 +0100
-Subject: [PATCH] dmaengine: Rework dma_chan_get
-
-dma_chan_get uses a rather interesting error handling and code path.
-
-Change it to something more usual in the kernel.
-
-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 | 36 +++++++++++++++++++-----------------
- 1 file changed, 19 insertions(+), 17 deletions(-)
-
---- a/drivers/dma/dmaengine.c
-+++ b/drivers/dma/dmaengine.c
-@@ -222,31 +222,33 @@ static void balance_ref_count(struct dma
-  */
- static int dma_chan_get(struct dma_chan *chan)
- {
--	int err = -ENODEV;
- 	struct module *owner = dma_chan_to_owner(chan);
-+	int ret;
- 
-+	/* The channel is already in use, update client count */
- 	if (chan->client_count) {
- 		__module_get(owner);
--		err = 0;
--	} else if (try_module_get(owner))
--		err = 0;
-+		goto out;
-+	}
- 
--	if (err == 0)
--		chan->client_count++;
-+	if (!try_module_get(owner))
-+		return -ENODEV;
- 
- 	/* allocate upon first client reference */
--	if (chan->client_count == 1 && err == 0) {
--		int desc_cnt = chan->device->device_alloc_chan_resources(chan);
--
--		if (desc_cnt < 0) {
--			err = desc_cnt;
--			chan->client_count = 0;
--			module_put(owner);
--		} else if (!dma_has_cap(DMA_PRIVATE, chan->device->cap_mask))
--			balance_ref_count(chan);
--	}
--
--	return err;
-+	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);
-+
-+out:
-+	chan->client_count++;
-+	return 0;
-+
-+err_out:
-+	module_put(owner);
-+	return ret;
- }
- 
- /**