(kernel-rolling) deepin/defconfig: Enable werror for kernel builds

[MingcongBai]

Picked and rebased from #115.

Enable this option can prevent from ignoring warnings which resulting in problems that difficult to locate and solve.

Also, it encourages to program more regularly and carefully, avoiding potential problems as much as possible.

So enable it on arm64, loongarch and x86.

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Hi @MingcongBai. Thanks for your PR.

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