Enable the sun8i-thermal driver to allow reading the
temperature of the SoC.
As suggested by mans0n, disable this driver in the
a8 subtarget because it does not support yet.
Tested on NanoPi R1S H5.
Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
The cortex53 subtarget was missing multiple config options and the other
targets just defined some options which are not needed.
Fixes: 83672f506d ("sunxi: add testing Linux 5.10")
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>