Corrected PPP thread stack size for RZ_A1_EMAC, CYW943012P6EVB_01,
CY8CPROTO_062_4343W, CY8CKIT_062_WIFI_BT and CY8CKIT_062S2_43012
that have special configuration for PPP thread size. Removed
pppInterface() helper call from network interface. It causes binary
compatibility break with precompiled network interface classes. Call
is helper function to check network interface type in case it is
unknown, and is not mandatory or used with PPP.
Created PPP service class that encapsulates the PPP protocol.
Class is similar to EMAC and L3IP classes with additional methods
to read IP and DNS server addresses negotiation using PPP and
to set PPP specific parameters (file handle for modem access etc.).
PPP service can use on its own thread or in run in mbed os event
Queue thread.
Added ppp_nsapi.cpp module that implements the nsapi_ppp.h
services.
Added ppp_nsapi.cpp module that implements the nsapi_ppp.h
services.
Antti Kauppila
Mika Leppänen
Kari Haapalehto