Moved the implementation from am33xx-restart.c to the prm33xx.c file to
isolate the PRM register accesses to be private for PRM driver.
Signed-off-by: NTero Kristo <t-kristo@ti.com>
Acked-by: NPaul Walmsley <paul@pwsan.com>
Tested-by: NNishanth Menon <nm@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>