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/generic/hack-4.9/904-debloat_dma_buf.patch

@@ -54,7 +54,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
 +MODULE_LICENSE("GPL");
 --- a/kernel/sched/core.c
 +++ b/kernel/sched/core.c
-@@ -2171,6 +2171,7 @@ int wake_up_state(struct task_struct *p,
+@@ -2170,6 +2170,7 @@ int wake_up_state(struct task_struct *p,
  {
  	return try_to_wake_up(p, state, 0);
  }