staging: wlan-ng: rename DIDmsg_p2req_ramdl_state in p80211metadef.h

Rename DIDmsg_p2req_ramdl_state to DIDMSG_P2REQ_RAMDL_STATE in
p80211metadef.h to fix "Avoid CamelCase" message from checkpatch and
conform to the coding style guidelines.

Signed-off-by: Tim Collier <osdevtc@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>