kernel: bump 5.4 to 5.4.31
Refreshed patches, removed upstreamed patches:
oxnas: 003-ARM-dts-oxnas-Fix-clear-mask-property.patch
generic: 184-USB-serial-option-add-Wistron-Neweb-D19Q1.patch
Run tested: apu2, qemu-x86-64, apalis
Build tested: sunxi/a53, imx6, x86/64, ipq40xx
Tested-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk> [apu2]
Signed-off-by: Petr Štetiar <ynezz@true.cz>