esm: configurate DAM of HDCP correctly

esm: configurate DAM of HDCP correctly

PD#146713: configurate DMA of HDCP correctly

1.In kernel 4.9, before DMA operation, of_dma_configure function must
be used. Otherwise, it will get a NULL pointer and result in a kernel
crash.

2.For secure reasons, node '/dev/mem' has gone away. But for esm, there
still need this feature for debug. So add a new blob for esay dump:
 dd if=/sys/kernel/debug/esm/blob of=/UPATH/esmmem.

Change-Id: Id86cc88227bf2d14aca3e3d323da32853a46e37f
Signed-off-by: Yi Zhou <yi.zhou@amlogic.com>