Set wifi country code from kernel command line Introduce two kernel cmdline args bcmdhd.wl_country_para and bcmdhd.wl_country_rev. Default value are 'US' and 140. Bug: 70135717, Bug: 69175538 Test: connect to wifi network using 5500MHz band Change-Id: I430b5ea7d401882ab8c97983df9e22665369a5c5 Signed-off-by:Tian Yang <yang.tian@nxp.com>