nl80211: don't hold RTNL in color change request

nl80211: don't hold RTNL in color change request

[ Upstream commit 1b550a0bebfc0b69d6ec08fe6eb58953a8aec48a ]

It's not necessary to hold the RTNL across color change
requests, since all the inner locking needs only the
wiphy mutex which we already hold as well.

Fixes: 0d2ab3aea50b ("nl80211: add support for BSS coloring")
Link: https://lore.kernel.org/r/20220414140402.32e03e8c261b.I5e7dc6bc563a129b938c43298da6bb4e812400a5@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>