staging: wlan-ng: rename DIDmib_dot11phy_dot11PhyDSSSTable_dot11CurrentChannel in p80211metadef.h

Rename DIDmib_dot11phy_dot11PhyDSSSTable_dot11CurrentChannel in
p80211metadef.h to DIDMIB_DOT11PHY_DSSSTABLE_CURRENTCHANNEL to fix
"Avoid CamelCase" message from checkpatch and conform to the coding
style guidelines. Also shorten name by removing repeated use of
"DOT11" and "DOT11PHY" to ease readability and reduce long lines.

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