staging: wilc1000: remove multiple define for mac connect and disconnect

Cleanup patch to have commonly used macro in common header file to avoid
same defination in mulitple file. Removed MAC_CONNECTED &
MAC_DISCONNECTED macro from coreconfigurator.h header.

Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>