device/testing/linux-*: get building again (MR 1684)

Mostly the GCC10 yylloc failure was seen but several others have been
observed:

* wireguard script was silently failing
* several gcc10 x86 errors
* a checksum from kernel.org has changed

Now we have 3 different gcc10 yylloc patches:

gcc10-extern_YYLOC_global_declaration.patch:
    Linux < 4.2

linux4.2-gcc10-extern_YYLOC_global_declaration.patch:
    Linux 4.2+

linux4.17-gcc10-extern_YYLOC_global_declaration.patch:
    Linux 4.17+

[ci:skip-build]
[ci:ignore-count]
[ci:skip-vercheck]