libgo: add runtime/pprof/internal/profile.gox to noinst_DATA

libgo: add runtime/pprof/internal/profile.gox to noinst_DATA

    Also add noinst_DATA to CHECK_DEPS; it's not needed in practice since
    `make` will build noinst_DATA, but it's logically required and will
    make a difference if any of the noinst_DATA sources change between
    `make` and `make check`.

    Tony Reix figured out why omitting packages from noinst_DATA didn't
    seem to matter: because if gccgo can't find foo.gox, it will fall back
    to reading the export data in foo.o, and foo.o will exist because
    these packages go into libgo.a.

    Reviewed-on: https://go-review.googlesource.com/101077

From-SVN: r258606