ARM: OMAP2+: clock: introduce ti_clk_features flags

This shall be used to replace the cpu type checks around the clock code.
Actual bit values will be introduced in patches later.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Reviewed-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Paul Walmsley <paul@pwsan.com>

diff --cc arch/arm/mach-omap2/clock.c
Simple merge

diff --cc arch/arm/mach-omap2/clock.h
Simple merge

diff --cc arch/arm/mach-omap2/io.c
Simple merge