1. Add soc definition structure to replace old one.
2. Use mpp_soc.h to replace soc detection in mpp_platform.h.
3. Add vcodec_type to each device definition.
4. Add check on soc info init.
Change-Id: Iecc44bd79e6fd09c58afbc1b5c526ecf31acc663
Signed-off-by: Herman Chen <herman.chen@rock-chips.com>
