gnrc_netif2: rename to gnrc_netif

Makefile.dep

cpu/nrf5x_common/radio/nrfmin/nrfmin_gnrc.c

drivers/cc110x/gnrc_cc110x/gnrc_cc110x.c

drivers/cc110x/include/gnrc_netif_cc110x.h

drivers/xbee/gnrc_xbee.c

drivers/xbee/include/gnrc_netif_xbee.h

examples/ccn-lite-relay/main.c

examples/gnrc_minimal/Makefile

examples/gnrc_minimal/main.c

examples/nanocoap_server/main.c

...-lite/patches/0001-ccn-line-riot-port-to-gnrc_netif.patch

pkg/nordic_softdevice_ble/src/gnrc_nordic_ble_6lowpan.c

sys/auto_init/netif/auto_init_at86rf2xx.c

sys/auto_init/netif/auto_init_cc110x.c

sys/auto_init/netif/auto_init_cc2420.c

sys/auto_init/netif/auto_init_cc2538_rf.c

sys/auto_init/netif/auto_init_enc28j60.c

sys/auto_init/netif/auto_init_encx24j600.c

sys/auto_init/netif/auto_init_ethos.c

sys/auto_init/netif/auto_init_kw2xrf.c