staging: wlan-ng: Fixed incorrect type warning in p80211netdev.c

This change fixes a sparse warning "incorrect type in argument 1
(different address spaces)".

Reviewed-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Pritthijit Nath <pritthijit.nath@icloud.com>
Link: https://lore.kernel.org/r/20210217154255.112115-1-pritthijit.nath@icloud.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>