stand: pass --no-rosegment for i386 bits when linking with lld

btxld does not correctly handle input with other than 2 PT_LOAD
segments. Passing --no-rosegment lets lld produce output eqivalent to
ld.bfd: 2 PT_LOAD segments and no PT_GNU_RELRO.

PR: 225775
MFC after: 3 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D14956