kernel: bump 5.15 to 5.15.123

kernel: bump 5.15 to 5.15.123

Manually rebased:
	bcm4908/patches-5.15/071-v6.1-0001-net-broadcom-bcm4908_enet-handle-EPROBE_DEFER-when-g.patch
	bcm53xx/patches-5.15/180-usb-xhci-add-support-for-performing-fake-doorbell.patch
	ipq40xx/patches-5.15/902-dts-ipq4019-ap-dk04.1.patch[*]

Removed upstreamed:
	backport-5.15/735-v6.5-net-bgmac-postpone-turning-IRQs-off-to-avoid-SoC-han.patch[1]
	backport-5.15/817-v6.5-01-leds-trigger-netdev-Recheck-NETDEV_LED_MODE_LINKUP-o.patch[2]
	pending-5.15/143-jffs2-reduce-stack-usage-in-jffs2_build_xattr_subsys.patch[3]
	pending-5.15/160-workqueue-fix-enum-type-for-gcc-13.patch[4]
	bcm53xx/patches-5.15/036-v6.5-0003-ARM-dts-BCM5301X-Drop-clock-names-from-the-SPI-node.patch[5]
	bcm53xx/patches-5.15/036-v6.5-0015-ARM-dts-BCM5301X-fix-duplex-full-full-duplex.patch[6]

All other patches automatically rebased.

1. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.123&id=02474292a44205c1eb5a03634ead155a3c9134f4
2. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.123&id=86b93cbfe104e99fd3d25a49748b99fb88101573
3. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.123&id=79b9ab357b6f5675007f4c02ff8765cbd8dc06a2
4. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.123&id=d528faa9e828b9fc46dfb684a2a9fd8c2e860ed8
5. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.123&id=5899bc4058e89d5110a23797ff94439c53b77c25
6. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.123&id=95afd2c7c7d26087730dc938709e025a303e5499

Build system: x86/64
Build-tested: ramips/tplink_archer-a6-v3
Run-tested: ramips/tplink_archer-a6-v3

Co-authored-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John Audia <therealgraysky@proton.me>
[rebased ipq40xx/patches-5.15/902-dts-ipq4019-ap-dk04.1.patch ]
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>