kernel: bump 4.9 to 4.9.67

Refresh patches.
Remove upstreamed patches:
- generic/190-1-5-e1000e-Fix-error-path-in-link-detection.patch
- generic/190-3-5-e1000e-Fix-return-value-test.patch
- generic/190-4-5-e1000e-Separate-signaling-for-link-check-link-up.patch
- generic/190-5-5-e1000e-Avoid-receiver-overrun-interrupt-bursts.patch
- ramips/0102-MIPS-ralink-Fix-MT7628-pinmux.patch
- ramips/0103-MIPS-ralink-Fix-typo-in-mt7628-pinmux-function
Update patches that no longer apply:
- layerscape/815-spi-support-layerscape.patch
- ramips/0099-pci-mt7620.patch

Compile-tested on ar71xx, brcm2708/bcm2708, octeon and x86/64.
Runtime-tested on ar71xx, brcm2708/bcm2708, octeon and x86/64.

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

target/linux/layerscape/patches-4.9/815-spi-support-layerscape.patch

@@ -15,16 +15,6 @@ Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
  drivers/spi/spi-fsl-dspi.c | 309 ++++++++++++++++++++++++++++++++++++++++++++-
  2 files changed, 305 insertions(+), 5 deletions(-)
 
---- a/drivers/spi/Kconfig
-+++ b/drivers/spi/Kconfig
-@@ -365,6 +365,7 @@ config SPI_FSL_SPI
- config SPI_FSL_DSPI
- 	tristate "Freescale DSPI controller"
- 	select REGMAP_MMIO
-+	depends on HAS_DMA
- 	depends on SOC_VF610 || SOC_LS1021A || ARCH_LAYERSCAPE || COMPILE_TEST
- 	help
- 	  This enables support for the Freescale DSPI controller in master
 --- a/drivers/spi/spi-fsl-dspi.c
 +++ b/drivers/spi/spi-fsl-dspi.c
 @@ -15,6 +15,8 @@