Merge branch 'spi-4.19' into spi-next

Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt

Documentation/devicetree/bindings/spi/spi-rockchip.txt

Documentation/devicetree/bindings/spi/spi-uniphier.txt

drivers/mtd/devices/m25p80.c

drivers/spi/Kconfig

drivers/spi/Makefile

drivers/spi/spi-ath79.c

drivers/spi/spi-bitbang.c

drivers/spi/spi-butterfly.c

drivers/spi/spi-dw-mmio.c

drivers/spi/spi-dw.c

drivers/spi/spi-dw.h

drivers/spi/spi-fsl-dspi.c

drivers/spi/spi-fsl-espi.c

drivers/spi/spi-gpio.c

drivers/spi/spi-img-spfi.c

drivers/spi/spi-imx.c

drivers/spi/spi-lm70llp.c

drivers/spi/spi-mem.c

drivers/spi/spi-omap2-mcspi.c