brcm2708: add kernel 4.14 support

Patch generation process:
- rebase rpi/rpi-4.14.y on v4.14.89 from linux-stable
- git format-patch v4.14.89

Patches skipped during rebase:
- lan78xx: Read MAC address from DT if present
- lan78xx: Enable LEDs and auto-negotiation
- Revert "softirq: Let ksoftirqd do its job"
- sc16is7xx: Fix for multi-channel stall
- lan78xx: Ignore DT MAC address if already valid
- lan78xx: Simple patch to prevent some crashes
- tcp_write_queue_purge clears all the SKBs in the write queue
- Revert "lan78xx: Simple patch to prevent some crashes"
- lan78xx: Connect phy early
- Arm: mm: ftrace: Only set text back to ro after kernel has been marked ro
- Revert "Revert "softirq: Let ksoftirqd do its job""
- ASoC: cs4265: SOC_SINGLE register value error fix
- Revert "ASoC: cs4265: SOC_SINGLE register value error fix"
- Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends"
- Revert "Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends""

Patches dropped after rebase:
- net: Add non-mainline source for rtl8192cu wlan
- net: Fix rtl8192cu build errors on other platforms
- brcm: adds support for BCM43341 wifi
- brcmfmac: Mute expected startup 'errors'
- ARM64: Fix build break for RTL8187/RTL8192CU wifi
- ARM64: Enable RTL8187/RTL8192CU wifi in build config
- This is the driver for Sony CXD2880 DVB-T2/T tuner + demodulator
- brcmfmac: add CLM download support
- brcmfmac: request_firmware_direct is quieter
- Sets the BCDC priority to constant 0
- brcmfmac: Disable ARP offloading when promiscuous
- brcmfmac: Avoid possible out-of-bounds read
- brcmfmac: Delete redundant length check
- net: rtl8192cu: Normalize indentation
- net: rtl8192cu: Fix implicit fallthrough warnings
- Revert "Sets the BCDC priority to constant 0"
- media: cxd2880: Bump to match 4.18.y version
- media: cxd2880-spi: Bump to match 4.18.y version
- Revert "mm: alloc_contig: re-allow CMA to compact FS pages"
- Revert "Revert "mm: alloc_contig: re-allow CMA to compact FS pages""
- cxd2880: CXD2880_SPI_DRV should select DVB_CXD2880 with
  MEDIA_SUBDRV_AUTOSELECT
- 950-0421-HID-hid-bigbenff-driver-for-BigBen-Interactive-PS3OF.patch
- 950-0453-Add-hid-bigbenff-to-list-of-have_special_driver-for-.patch

Make I2C built-in instead of modular as in upstream defconfig; also the
easiest way to get MFD_ARIZONA enabled, which is required by
kmod-sound-soc-rpi-cirrus.
Add missing compatible strings from
4.9/960-add-rasbperrypi-compatible.patch, using upstream names for
compute modules.
Add extra patch to enable the LEDs on lan78xx.

Compile-tested: bcm2708, bcm2709, bcm2710 (with CONFIG_ALL_KMODS=y)
Runtime-tested: bcm2708, bcm2710

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>

1 files changed, 46 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.14/950-0280-gpiolib-Don-t-prevent-IRQ-usage-of-output-GPIOs.patch b/target/linux/brcm2708/patches-4.14/950-0280-gpiolib-Don-t-prevent-IRQ-usage-of-output-GPIOs.patch
new file mode 100644
index 0000000000..60e8858005
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.14/950-0280-gpiolib-Don-t-prevent-IRQ-usage-of-output-GPIOs.patch
@@ -0,0 +1,46 @@
+From aeb94070e992a60cf33f0300c8317b39e3ae16db Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Tue, 24 Apr 2018 14:42:27 +0100
+Subject: [PATCH 280/454] gpiolib: Don't prevent IRQ usage of output GPIOs
+
+Upstream Linux deems using output GPIOs to generate IRQs as a bogus
+use case, even though the BCM2835 GPIO controller is capable of doing
+so. A number of users would like to make use of this facility, so
+disable the checks.
+
+See: https://github.com/raspberrypi/linux/issues/2527
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/gpio/gpiolib.c | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+--- a/drivers/gpio/gpiolib.c
++++ b/drivers/gpio/gpiolib.c
+@@ -53,6 +53,8 @@
+ #define	extra_checks	0
+ #endif
+ 
++#define dont_test_bit(b,d) (0)
++
+ /* Device and char device-related information */
+ static DEFINE_IDA(gpio_ida);
+ static dev_t gpio_devt;
+@@ -2303,7 +2305,7 @@ static int _gpiod_direction_output_raw(s
+ 	int ret;
+ 
+ 	/* GPIOs used for IRQs shall not be set as output */
+-	if (test_bit(FLAG_USED_AS_IRQ, &desc->flags)) {
++	if (dont_test_bit(FLAG_USED_AS_IRQ, &desc->flags)) {
+ 		gpiod_err(desc,
+ 			  "%s: tried to set a GPIO tied to an IRQ as output\n",
+ 			  __func__);
+@@ -2818,7 +2820,7 @@ int gpiochip_lock_as_irq(struct gpio_chi
+ 			set_bit(FLAG_IS_OUT, &desc->flags);
+ 	}
+ 
+-	if (test_bit(FLAG_IS_OUT, &desc->flags)) {
++	if (dont_test_bit(FLAG_IS_OUT, &desc->flags)) {
+ 		chip_err(chip,
+ 			  "%s: tried to flag a GPIO set as output for IRQ\n",
+ 			  __func__);