This patch
1. Refactors settings of tx power
2. enables iwconfig txpower <value>
3. adds 5000 HW tx power
Signed-off-by: NTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: NZhu Yi <yi.zhu@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>