OMAPDSS: DSI: remove clkin from dsi_clock_info

struct dsi_clock_info contains clkin field, which is the rate of the
PLL's input clock. This field is not needed, as it can be easily
retrieved by using the clk_get_rate().

This patch removes the clkin field.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

diff --cc drivers/video/fbdev/omap2/dss/dpi.c
Simple merge

diff --cc drivers/video/fbdev/omap2/dss/dsi.c
Simple merge

diff --cc drivers/video/fbdev/omap2/dss/dss.h
Simple merge