sys-libs/musl: prefixify build
Currently building a musl libc toolchain inside of gentoo prefix with
crossdev will fail, due to installing files outside of the prefix. Added
${EPREFIX} and ${ED} where apropriate fixed this issue.
Tested in a prefix with toolchain x86_64-gentoo-linux-musl, and tested on bare
gentoo with x86_64-gentoo-linux-musl.
Acked-by: blueness
Package-Manager: Portage-2.3.19, Repoman-2.3.6
Signed-off-by: Marty E. Plummer <hanetzer@protonmail.com>
Closes: https://bugs.gentoo.org/642612
Closes: https://github.com/gentoo/gentoo/pull/6678