Fix compilation warning for WiFi library
Fix compilation warning for WiFi library

hardware/cc3200emt/libraries/WiFi/utility/cc_pal.c:755:6: warning: conflicting types for 'cc_UDMAChannelSelect' [enabled by default]
hardware/cc3200emt/libraries/WiFi/utility/cc_pal.c:778:6: warning: conflicting types for 'cc_SetupTransfer' [enabled by default]

croberts15/Energia,croberts15/Energia,battosai30/Energia,battosai30/Energia,battosai30/Energia,battosai30/Energia,vigneshmanix/Energia,croberts15/Energia,vigneshmanix/Energia,vigneshmanix/Energia,vigneshmanix/Energia,vigneshmanix/Energia,battosai30/Energia,vigneshmanix/Energia,battosai30/Energia,croberts15/Energia,croberts15/Energia,croberts15/Energia,croberts15/Energia,vigneshmanix/Energia,battosai30/Energia