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/ramips/patches-4.9/0040-nand-hack.patch

@@ -18,7 +18,7 @@
  			if (ret < 0) {
  				if (use_bufpoi)
  					/* Invalidate page cache */
-@@ -3203,8 +3207,11 @@ int nand_erase_nand(struct mtd_info *mtd
+@@ -3206,8 +3210,11 @@ int nand_erase_nand(struct mtd_info *mtd
  		    (page + pages_per_block))
  			chip->pagebuf = -1;
  
@@ -31,7 +31,7 @@
  		/*
  		 * See if operation failed and additional status checks are
  		 * available
-@@ -4398,6 +4405,7 @@ int nand_scan_ident(struct mtd_info *mtd
+@@ -4401,6 +4408,7 @@ int nand_scan_ident(struct mtd_info *mtd
  		 * cmdfunc() both expect cmd_ctrl() to be populated,
  		 * so we need to check that that's the case
  		 */