ARM: OMAP3: control: isolate control module init to its own function

Control module related PM initializations are now moved within control
module driver. Done in preparation to isolate the code to its own driver.

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

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

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

diff --cc arch/arm/mach-omap2/pm34xx.c
Simple merge

diff --cc arch/arm/mach-omap2/prm3xxx.c
Simple merge