This adds OF support to DaVinci SPI controller to configure platform
data through device bindings. Also replaces clk_enable() with
of clk_prepare_enable() as well as clk_disable() with
clk_disable_unprepare().
Signed-off-by: NMurali Karicheri <m-karicheri2@ti.com>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>