UPSTREAM: mac80211-hwsim: support destroying radio by name

It is not always convenient to have to know the device-id,
so allow deleting by name as well.

Signed-off-by: Ben Greear <greearb@candelatech.com>
[use wiphy_name() instead of dev_name()]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
(cherry picked from commit 8cdd9e1c)
Bug: 70214720
Change-Id: I165f6ed6be4c4ecef1ac3b6728b893945748f203
Signed-off-by: Alistair Strachan <astrachan@google.com>