x86: support kernel 5.10

x86: support kernel 5.10

Add linux 5.10 as testing kernel, copy generic/subtarget configs and target
patches from 5.4.

Signed-off-by: Tony Ambardar <itugrok@yahoo.com>
x86: update target patches for kernel 5.10

Refresh all patches while also dropping:
    800-hwmon-w83627ehf-dont-claim-nct677x.patch

which is now upstreamed as:
    3207408ab4cb ("hwmon: (w83627ehf) remove nct6775 and nct6776 support")

Signed-off-by: Tony Ambardar <itugrok@yahoo.com>
x86: refresh 5.10 target config

Refresh config using "make kernel_oldconfig".

Signed-off-by: Tony Ambardar <itugrok@yahoo.com>
x86: refresh and test all subtarget configs

Refresh configs using "make kernel_oldconfig CONFIG_TARGET=subtarget".

Build and run-tested using QEMU: x86/64, x86/legacy, x86/generic.
Build-tested only: x86/geode.

Signed-off-by: Tony Ambardar <itugrok@yahoo.com>
[squashed commits]
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>