net: ocelot: update the MODULE_DESCRIPTION()

commit 1c870c63 ("net: fill in MODULE_DESCRIPTION()s for ocelot")
got a suggestion from Vladimir Oltean after it had landed in net-next.

Rewrite the module description according to Vladimir's suggestion.

Fixes: 1c870c63 ("net: fill in MODULE_DESCRIPTION()s for ocelot")
Suggested-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>