ARM: OMAP2+: clock: add fint values to the ti_clk_features struct

These are SoC specific and get their init values based on the SoC type.
Previously the values were hard coded within the DPLL clock code, but
having them inside the clock features avoids runtime cpu_is_X type checks.

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