iwmc3200wifi: Update wireless_mode with eeprom values

The iwmc3200wifi eeprom contains information about the available PHYs on
the chip. We should update our wireless_mode setting and profile according
to it.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>