drivers: spi: omap3_spi: Initialize mode for all channels

At first SPI transfers, multiple chip selects can be
enabled simultaneously. This is due to chip select
polarity, which is not properly initialized for all
channels. This patch fixes the issue.

Signed-off-by: Julien Panis <jpanis@baylibre.com>

arm: mach-omap2: am33xx: Add device structure for spi

Add platform data and a device structure for the spi device
present on am335x-icev2. This requires moving all omap3_spi
platform data structures and symbols to an omap3_spi.h so that
the board file can access them.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>

arm: mach-omap2: am33xx: Add device structure for spi

Add platform data and a device structure for the spi device
present on am335x-icev2. This requires moving all omap3_spi
platform data structures and symbols to an omap3_spi.h so that
the board file can access them.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>