rockchip: rk3308: Move cru and grf include files to arch-rockchip

Move cru_rk3308.h and grf_rk3308.h to arch-rockchip to match path used
for all other Rockchip SoCs.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
8 files changed