msm: vidc: Initial changes for video driver 64 bit support

Use ion_phys_addr_t type to hold all kinds of virtual addresses
and phys_addr_t for physical addresses.

Send zero clnt_data instead of vb_buffer address(truncated value)
to fw and get vb_buffer address in EBD/FBD using device address.

Change-Id: I610f96ba7add80daeddb5adb11a2d5a3f7ac52d3
Signed-off-by: Shalaj Jain <shalajj@codeaurora.org>