kernel: bump 6.6 to 6.6.71

kernel: bump 6.6 to 6.6.71

Changelog: https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.71

Manually rebased:
	airoha/patches-6.6/110-01-clk-en7523-Rework-clock-handling-for-different-clock.patch
	airoha/patches-6.6/111-mmc-mtk-sd-add-support-for-AN7581-MMC-Host.patch

All other patches automatically rebased.

Build system: x86/64
Build-tested: bcm27xx/bcm2712
Run-tested: bcm27xx/bcm2712

Signed-off-by: John Audia <therealgraysky@proton.me>
[ fix manually rebased patch ]
Link: https://github.com/openwrt/openwrt/pull/17568
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
(cherry picked from commit 3f87c5ac4221deb37d4c3e730e692eef8f9c9ffe)