meson: add driver_remote option only into meson_options.txt

meson: add driver_remote option only into meson_options.txt

We cannot add the full option with the code in meson.build because it
depends on xdr option which will be introduced later but we have to have
the option present because it is used by libssh, libssh2 and sasl
options so we need to break the circular dependency.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Neal Gompa <ngompa13@gmail.com>