kernel: bump 5.4 to 5.4.110
Ran update_kernel.sh in a fresh clone without any existing toolchains.
Manually rebased due to movement of rx-offload.c in 5.4.110:
layerscape/patches-5.4/802-can-0002-can-rx-offload-fix-long-lines.patch
layerscape/patches-5.4/802-can-0003-can-rx-offload-can_rx_offload_compare-fix-typo.patch
layerscape/patches-5.4/802-can-0004-can-rx-offload-can_rx_offload_irq_offload_timestamp-.patch
layerscape/patches-5.4/802-can-0005-can-rx-offload-can_rx_offload_reset-remove-no-op-fun.patch
layerscape/patches-5.4/802-can-0006-can-rx-offload-Prepare-for-CAN-FD-support.patch
layerscape/patches-5.4/802-can-0018-can-flexcan-use-struct-canfd_frame-for-CAN-classic-f.patch
Build system: x86_64
Build-tested: ipq806x/R7800
Run-tested: ipq806x/R7800
No dmesg regressions, everything functional
Signed-off-by: John Audia <graysky@archlinux.us>