Merge branch 'topic-0620/samsung-spi-3.4' into chromeos-exynos-3.4

Merge branch 'topic-0620/samsung-spi-3.4' into chromeos-exynos-3.4

* topic-0620/samsung-spi-3.4:
  mtd: m25p80: Add support for Winbond W25Q80BW
  ARM: Exynos4: Fix the incorrect hierarchy of spi controller bus clock
  spi: s3c64xx: add device tree support
  spi: s3c64xx: Remove the 'set_level' callback from controller data
  ARM: Samsung: Modify s3c64xx_spi{0|1|2}_set_platdata function
  ARM: Samsung: Remove pdev pointer paremeter from spi gpio setup functions
  spi: s3c64xx: move controller information into driver data
  spi: s3c64xx: remove unused S3C64XX_SPI_ST_TRLCNTZ macro