ipq40xx: backport I2C QUP driver changes from 4.17

Backport below changes for I2C QUP driver from v4.17:

  0668bc44a426 i2c: qup: fix copyrights and update to SPDX identifier
  7239872fb340 i2c: qup: fixed releasing dma without flush operation completion
  eb422b539c1f i2c: qup: minor code reorganization for use_dma
  6d5f37f166bb i2c: qup: remove redundant variables for BAM SG count
  c5adc0fa63a9 i2c: qup: schedule EOT and FLUSH tags at the end of transfer
  7e6c35fe602d i2c: qup: fix the transfer length for BAM RX EOT FLUSH tags
  3f450d3eea14 i2c: qup: proper error handling for i2c error in BAM mode
  08f15963bc75 i2c: qup: use the complete transfer length to choose DMA mode
  ecb6e1e5f435 i2c: qup: change completion timeout according to transfer length
  6f2f0f6465ac i2c: qup: fix buffer overflow for multiple msg of maximum xfer len
  f7714b4e451b i2c: qup: send NACK for last read sub transfers
  fbfab1ab0658 i2c: qup: reorganization of driver code to remove polling for qup v1
  7545c7dba169 i2c: qup: reorganization of driver code to remove polling for qup v2

This fixes various I2C issues observed on AP120C-AC board equipped with
Atmel/Microchip AT97SC3205T TPM module.

Tested-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>

1 files changed, 36 insertions, 0 deletions

diff --git a/target/linux/ipq40xx/patches-4.14/088-0001-i2c-qup-fix-copyrights-and-update-to-SPDX-identifier.patch b/target/linux/ipq40xx/patches-4.14/088-0001-i2c-qup-fix-copyrights-and-update-to-SPDX-identifier.patch
new file mode 100644
index 0000000000..b2b317245f
--- /dev/null
+++ b/target/linux/ipq40xx/patches-4.14/088-0001-i2c-qup-fix-copyrights-and-update-to-SPDX-identifier.patch
@@ -0,0 +1,36 @@
+From 0668bc44a42672626666e4f66aa1f2c22528e8a5 Mon Sep 17 00:00:00 2001
+From: Abhishek Sahu <absahu@codeaurora.org>
+Date: Mon, 12 Mar 2018 18:44:50 +0530
+Subject: [PATCH 01/13] i2c: qup: fix copyrights and update to SPDX identifier
+
+The file has been updated from 2016 to 2018 so fixed the
+copyright years.
+
+Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
+Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
+---
+ drivers/i2c/busses/i2c-qup.c | 13 ++-----------
+ 1 file changed, 2 insertions(+), 11 deletions(-)
+
+--- a/drivers/i2c/busses/i2c-qup.c
++++ b/drivers/i2c/busses/i2c-qup.c
+@@ -1,17 +1,8 @@
++// SPDX-License-Identifier: GPL-2.0
+ /*
+- * Copyright (c) 2009-2013, The Linux Foundation. All rights reserved.
++ * Copyright (c) 2009-2013, 2016-2018, The Linux Foundation. All rights reserved.
+  * Copyright (c) 2014, Sony Mobile Communications AB.
+  *
+- *
+- * This program is free software; you can redistribute it and/or modify
+- * it under the terms of the GNU General Public License version 2 and
+- * only version 2 as published by the Free Software Foundation.
+- *
+- * This program is distributed in the hope that it will be useful,
+- * but WITHOUT ANY WARRANTY; without even the implied warranty of
+- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+- * GNU General Public License for more details.
+- *
+  */
+ 
+ #include <linux/acpi.h>