Merge remote-tracking branches 'spi/topic/atmel', 'spi/topic/bcm-qspi',...

Merge remote-tracking branches 'spi/topic/atmel', 'spi/topic/bcm-qspi', 'spi/topic/bcm2835aux', 'spi/topic/dw' and 'spi/topic/gpio' into spi-next