The pm code for R-Car Gen2 is scatterd in each SoC. These files
(pm-r8a7790.c/pm-r8a7791.c) have some overlap code. This change
consolidate the pm code for R-Car Gen2 into one.
Signed-off-by: Gaku Inami
Acked-by: Geert Uytterhoeven
Signed-off-by: Simon Horman