staging:wlan-ng: slove sparse warnings

drivers/staging/wlan-ng/prism2fw.c:127:18: warning: symbol 's3data' was not declared. Should it be static?
drivers/staging/wlan-ng/prism2fw.c:130:14: warning: symbol 'ns3plug' was not declared. Should it be static?
drivers/staging/wlan-ng/prism2fw.c:131:18: warning: symbol 's3plug' was not declared. Should it be static?
drivers/staging/wlan-ng/prism2fw.c:134:14: warning: symbol 'ns3crc' was not declared. Should it be static?
drivers/staging/wlan-ng/prism2fw.c:135:17: warning: symbol 's3crc' was not declared. Should it be static?
drivers/staging/wlan-ng/prism2fw.c:138:14: warning: symbol 'ns3info' was not declared. Should it be static?
drivers/staging/wlan-ng/prism2fw.c:139:18: warning: symbol 's3info' was not declared. Should it be static?
drivers/staging/wlan-ng/prism2fw.c:142:5: warning: symbol 'startaddr' was not declared. Should it be static?
drivers/staging/wlan-ng/prism2fw.c:145:14: warning: symbol 'nfchunks' was not declared. Should it be static?
drivers/staging/wlan-ng/prism2fw.c:146:17: warning: symbol 'fchunk' was not declared. Should it be static?
drivers/staging/wlan-ng/prism2fw.c:154:12: warning: symbol 'pda' was not declared. Should it be static?
drivers/staging/wlan-ng/prism2fw.c:155:21: warning: symbol 'nicid' was not declared. Should it be static?
drivers/staging/wlan-ng/prism2fw.c:156:20: warning: symbol 'rfid' was not declared. Should it be static?
drivers/staging/wlan-ng/prism2fw.c:157:20: warning: symbol 'macid' was not declared. Should it be static?
drivers/staging/wlan-ng/prism2fw.c:158:20: warning: symbol 'priid' was not declared. Should it be static?

Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>