patchs: custom_wific: add new flag PRESTO_WIFI

Change-Id: If8b58943448ac53aeffcf843c269454607698d21
presto_wifi.c: update to cm-11.0 sources, and reformat to adapt to new patch

Change-Id: Ic06a97b886b15d9db2400b80020ce8b93b951b33