Configure wfd-manager using config file

Configure wfd-manager using config file

Description: This patch adds the support to configure
wfd-manager using config files for common configurable parameters
for different platforms (TV, Mobile, TM1, Wearable).

config file path: /etc/wifi-direct/wifi-direct-manager.conf

Configurable parameters
1. Interface
2. Group interface
3. Device name
4. Primary/Secondary device type
5. Go intent
6. Persistent reconnect
7. listen reg class
8. Listen channel
9. Operating reg class
10. Operating channel
11. Config method
12. No group iface flag

Remove MACRO dependency to configure

Change-Id: Ic520f38a0c88ea251dbe0e0df23218d57e0a7a59
Signed-off-by: Milind Ramesh Murhekar <m.murhekar@samsung.com>