ath79: refresh 6.6 kernel patches

ath79: refresh 6.6 kernel patches

Some APIs have been changed. Porting them to the new kernel 6.6
version to fix the compile error.

Removed upstreamed:
	010-v6.4-gpio-ath79-Convert-to-immutable-irq_chip.patch[1]

Manually rebased:
	700-phy-add-ath79-usb-phys.patch
	721-phy-mdio-bitbang-prevent-rescheduling-during-command.patch. ref:[2]

[1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-6.6.y&id=b11ce7e48121a02ceedec9f4dfcab4f2bee8f35f
[2] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-6.6.y&id=002dd3de097c778a74ae9e47e598bea6ad055af0

Signed-off-by: Shiji Yang <yangshiji66@qq.com>