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/ar71xx/patches-4.9/432-spi-rb4xx-spi-driver.patch

@@ -1,6 +1,6 @@
 --- a/drivers/spi/Kconfig
 +++ b/drivers/spi/Kconfig
-@@ -533,6 +533,12 @@ config SPI_QUP
+@@ -534,6 +534,12 @@ config SPI_QUP
  	  This driver can also be built as a module.  If so, the module
  	  will be called spi_qup.
  

target/linux/ar71xx/patches-4.9/433-spi-rb4xx-cpld-driver.patch

@@ -1,6 +1,6 @@
 --- a/drivers/spi/Kconfig
 +++ b/drivers/spi/Kconfig
-@@ -761,6 +761,13 @@ config SPI_TLE62X0
+@@ -762,6 +762,13 @@ config SPI_TLE62X0
  	  sysfs interface, with each line presented as a kind of GPIO
  	  exposing both switch control and diagnostic feedback.
  

target/linux/ar71xx/patches-4.9/435-spi-vsc7385_driver.patch

@@ -1,6 +1,6 @@
 --- a/drivers/spi/Kconfig
 +++ b/drivers/spi/Kconfig
-@@ -768,6 +768,11 @@ config SPI_RB4XX_CPLD
+@@ -769,6 +769,11 @@ config SPI_RB4XX_CPLD
  	  SPI driver for the Xilinx CPLD chip present on the
  	  MikroTik RB4xx boards.