vpp: add two layers support for each chips [1/6]

vpp: add two layers support for each chips [1/6]

PD#SWPL-85

Problem:
Need support two video layers feature

Solution:
1.Add vd2 mif config
2.Add vd2 pps calculation and config
3.Add vd2 axis/crop/screen mode interface by sysfs and ioctl
4.Add layer query/alloc/free interface

Verify:
Verify on U212

Change-Id: I71fc9ab2ae0230c3e84c4b790e77d2c790951642
Signed-off-by: Brian Zhu <brian.zhu@amlogic.com>