clk: ti: autoidle: move generic autoidle handling code to clock driver

This is no longer needed in platform directory, as the legacy clock data
is gone, so move it under TI clock driver. Some static functions are
renamed also.

Signed-off-by: Tero Kristo <t-kristo@ti.com>

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

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

diff --cc drivers/clk/ti/autoidle.c
Simple merge

diff --cc drivers/clk/ti/clock.h
Simple merge

diff --cc drivers/clk/ti/fixed-factor.c
Simple merge

diff --cc include/linux/clk/ti.h
Simple merge