Applying libc-compat.h related patches to the kernel itself breaks the build.
It doesn't really make much sense to do that anyway because it is highly
unlikely that there will be any musl dpecific patch for the kernel itself.

Note:

If you see something like this while trying to build a package using musl libc
this kind of fix might also apply for that package!

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freadahead.c: In function 'freadahead':
freadahead.c:83:3: error: #error "Please port gnulib freadahead.c to your platform! Look at the definition of fflush, fread, ungetc on your system, th en report this to bug-gnulib."
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