User:Veremit/Genkernel for musl

Fixing Genkernel for use on musl systems
There are several issues using Genkernel on musl systems. These include:
 * Insufficient patching for genkernel "sub-packages"
 * copying the musl linker files (or lack thereof)

Linker

 * There is no in musl. This means we don't need to copy it in gen_initramfs#L509
 * Similarly no . Remove from gen_initramfs#L512-513
 * We can remove the folder from the initramfs #Lzzz