msm8660: Add Wi-Fi AP module args

 * Add the module args to use the custom firmware switch since the sysfs
   technique does not work with our driver.

Change-Id: If6cd8d70cea63e4723d63076afd7b97be65879be
msm8660: Enable Miracast feature

Change-Id: I1957b4d161940567c422d6f7c8bfd273da97508f