drivers/net/ieee802154/: add spi_atben_gpio to the build/config system
spi_atben_gpio.c: adapt to use spi-gpio instead of providing own driver
spi_atben_gpio.c: adapt to use spi-gpio instead of providing own driver
Merge branch 'master' of /home/qi/k/./ben-wpan-linux
spi-jz4740-gpio.c: SPI-GPIO variant optimized for Jz4740
Merge branch 'master' of /home/qi/k/./ben-wpan-linux
spi-jz4740-gpio.c: cleanup and a few corrections
pi-jz4740-gpio.c: more cleanup, mainly whitespace
spi_atben_gpio.c: use spi_jz4740_gpio if available, else spi_gpio (unclean)
spi-jz4740-gpio.c: give credit to spi-gpio.c
spi-gpio-atben.c: device-specific SPI driver, using the #include "spi-gpio.c" method
spi_atben_gpio.c: add support for spi-gpio-atben
spi-gpio-atben.c: fix MOSI/MISO swap
spi-gpio-atben.c: replace gpio_{get,set}_value with optimized macros