drivers: adapted gpio_init(_x)() calls

drivers/adt7310/adt7310.c

drivers/at86rf2xx/at86rf2xx.c

drivers/cc110x/cc110x-netdev2.c

drivers/cc110x/cc110x-spi.c

drivers/cc110x/cc110x.c

drivers/dht/dht.c

drivers/enc28j60/enc28j60.c

drivers/encx24j600/encx24j600.c

drivers/include/dht.h

drivers/kw2xrf/kw2xrf.c

drivers/kw2xrf/kw2xrf_spi.c

drivers/lis3dh/lis3dh.c

drivers/lsm303dlhc/lsm303dlhc.c

drivers/nrf24l01p/nrf24l01p.c

drivers/nvram_spi/nvram-spi.c

drivers/pcd8544/pcd8544.c

drivers/pir/pir.c

drivers/xbee/xbee.c