Provides a driver for hardcoding EAP-SIM/AKA keys. The driver
expects the environment variable IWD_SIM_KEYS to point to a
valid config file with IMSI, Kc, SRES for SIM or IMSI, KI, OPC,
AMF for AKA. To use this driver '--plugin=sim_hardcoded' must
be supplied when IWD starts.
