sysutils/gomi: Fix build on aarch64

vendor/golang.org/x/sys/unix/ztypes_freebsd_arm64.go:400:12: undefined: uint128

Import upstream patch https://github.com/golang/sys/commit/33540a1f603772f9d4b761f416f5c10dade23e96

Approved by: portmgr (build fix blanket)