the current BCM4329 rfkill driver assumes usage of 2 GPIOs
known as RST and SHUTDOWN and the driver makes a particular
GPIO mandatory. Some of the platforms does not define both
GPIOs, instead a single either RST/SHUTDOWN GPIO is used to
setup the chip.

This change makes driver to consider any of the two GPIOs
as optional and use any of the RST/SHUTDOWN GPIOs.

Simultaneous usage of both GPIOs is also allowed.

Change-Id: Ib66ea350e78642082f639514ef7a9def6e460e28
Reviewed-on: http://git-master/r/14534
Reviewed-by: Anantha Idapalapati <aidapalapati@nvidia.com>
Tested-by: Anantha Idapalapati <aidapalapati@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>

Source files should not be with executable permission.

Change-Id: I70b6be4cf88fea4be9b092ca2f5dd08e40ee7cbd
Reviewed-on: http://git-master/r/12081
Reviewed-by: Chao Jiang <chaoj@nvidia.com>
Tested-by: Chao Jiang <chaoj@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>

A new "rfkill" driver added to control the BT radio.

Bug 724106

Change-Id: I60ce0d188884d17f4f61d378b43368b7b5f9d7a9
(cherry picked from commit 78dbd0a022280964d3e9dcd3f00753ce8d66fa16)
Reviewed-on: http://git-master/r/9955
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Tested-by: Bharat Nihalani <bnihalani@nvidia.com>