ge2d: ge2d cpu cost optimize [2/2]

ge2d: ge2d cpu cost optimize [2/2]

PD#SWPL-7422

Problem:
ge2d ioctl have cpu usage issue

Solution:
1. dma buffer alloc gdc module,when dma buf exported, fd and phys
address can be recorded.driver can get phys address via fd internally.
2. dmabuf alloc by other driver module, need used gdc_dma_buffer_map/
gdc_dma_buffer_unmap to get phys address.

Verify:
Newman & W400 board

Change-Id: I78d03b52e574daf2e8b2d53eb8fdfde06357ebfe
Signed-off-by: Pengcheng Chen <pengcheng.chen@amlogic.com>