Revert "main/postmarketos-ui-phosh: Disable on riscv64 (MR 4342)"
The dependency xdg-desktop-portal-gnome has been reenabled in Alpine: https://gitlab.alpinelinux.org/alpine/aports/-/commit/902360a1841b8de0586238dee9096920a20415fc
The linking issue was caused by libudev-zero being pulled in as dependency instead of eudev. This has been fixed in the meantime.
This reverts commit a48d4dac.