kernel: bump 6.1 to 6.1.103

kernel: bump 6.1 to 6.1.103

https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.103

Removed upstreamed:
generic/backport-6.1/412-v6.3-01-spidev-Add-Silicon-Labs-EM3581-device-compatible.patch

See: See: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.1.103&id=c6c419ed94788ca13334b4acd50167b7f6d00a06

All other patches automatically rebased.

Build system: bcm4908 bcm53xx

Signed-off-by: Zxl hhyccc <zxlhhy@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/16093
Signed-off-by: Robert Marko <robimarko@gmail.com>