kernel: bump 6.6 to 6.6.31

kernel: bump 6.6 to 6.6.31

Changelog: https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.31

Removed upstreamed:
	backport-6.6/600-v6.9-01-net-gro-parse-ipv6-ext-headers-without-frag0-invalid.patch[1]
	backport-6.6/600-v6.9-02-net-gro-fix-udp-bad-offset-in-socket-lookup-by-addin.patch[2]
	backport-6.6/600-v6.9-03-net-gro-add-flush-check-in-udp_gro_receive_segment.patch[3]
	backport-6.6/816-v6.7-0002-nvmem-add-explicit-config-option-to-read-old-syntax-.patch[4]
	pending-6.6/681-net-bridge-fix-multicast-to-unicast-with-fraglist-GS.patch[5]
	pending-6.6/682-net-core-reject-skb_copy-_expand-for-fraglist-GSO-sk.patch[6]
	pending-6.6/684-net-bridge-fix-corrupted-ethernet-header-on-multicas.patch[7]
	pending-6.6/778-net-l2tp-drop-flow-hash-on-forward.patch[8]
	pending-6.6/440-mtd-don-t-look-for-OTP-legacy-NVMEM-cells-if-proper-.patch[9a,b]

All other patches automatically rebased.

1. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.6.31&id=7f7b0ebb37afc5070d122318e3651d7cb8c4f01c
2. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.6.31&id=af276a5ac8e938c8b058e3e124073cc1e322d98b
3. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.6.31&id=78b6092d78341e423e5f6afae4d9f401b561aca7
4. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.6.31&id=26e2fe4cab10e67f116f4a2eecc393824bb294b8
5. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.6.31&id=65fbc7a11d063236e1f1dcebb38eeaa3ccbe2dbc
6. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.6.31&id=cfe34d86ef9765c388f145039006bb79b6c81ac6
7. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.6.31&id=1ce60741d7e17dcf707e3bdebed4442ae30bdd02
8. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.6.31&id=23e25d2fc777cd0cc77c2f857f93e9b13ee789b9
9a. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.6.31&id=cce311f8bbbf9d24eacc39af3228cd104e079396
9b. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/diff/drivers/mtd/mtdcore.c?id=v6.6.31&id2=v6.6.30

Build system: x86/64
Build-tested: x86/64/AMD Cezanne, flogic/xiaomi_redmi-router-ax6000-ubootmod, ramips/tplink_archer-a6-v3
Run-tested: x86/64/AMD Cezanne, flogic/xiaomi_redmi-router-ax6000-ubootmod, ramips/tplink_archer-a6-v3

Signed-off-by: John Audia <therealgraysky@proton.me>