kernel: bump to 4.4.40

Refresh patches on all 4.4 supported platforms.
Compile & run tested: lantiq/xrx200

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

target/linux/generic/patches-4.4/048-mtd-spi-nor-backport-SPI_NOR_HAS_LOCK-flag.patch

@@ -15,8 +15,6 @@ Tested-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
  drivers/mtd/spi-nor/spi-nor.c | 7 +++++--
  1 file changed, 5 insertions(+), 2 deletions(-)
 
-diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
-index 72d87c2..d1edafc 100644
 --- a/drivers/mtd/spi-nor/spi-nor.c
 +++ b/drivers/mtd/spi-nor/spi-nor.c
 @@ -68,6 +68,7 @@ struct flash_info {

target/linux/generic/patches-4.4/105-add-linux-spidev-compatible.patch

@@ -3,8 +3,8 @@ Several device in ramips have this binding in the dts
 
 Signed-off-by: Giuseppe Lippolis <giu.lippolis@gmail.com>
 ---
---- a/drivers/spi/spidev.c	2016-12-11 09:43:30.502270523 +0100
-+++ b/drivers/spi/spidev.c	2016-12-11 09:45:54.688430012 +0100
+--- a/drivers/spi/spidev.c
++++ b/drivers/spi/spidev.c
 @@ -695,6 +695,7 @@ static struct class *spidev_class;
  static const struct of_device_id spidev_dt_ids[] = {
  	{ .compatible = "rohm,dh2228fv" },

target/linux/generic/patches-4.4/479-enable_mtd_has_lock_for_f25l32pa.patch

@@ -9,8 +9,6 @@ Acked-by: Marek Vasut <marek.vasut@gmail.com>
  drivers/mtd/spi-nor/spi-nor.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)
 
-diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
-index da7cd69..f325925 100644
 --- a/drivers/mtd/spi-nor/spi-nor.c
 +++ b/drivers/mtd/spi-nor/spi-nor.c
 @@ -689,7 +689,7 @@ static const struct flash_info spi_nor_i