video: driver: implement memory_ops for upstream

- Implement upstream specific memory_alloc/map and
  memory_unmap/free API based on standard dma_alloc_attr()
  and dma_free_attr() APIs which allocates and map dma buffer.
- Combine alloc and map, unmap and free.

Change-Id: Ie85914beb72c3976febdc9e6a11c9199f2ea4192
Signed-off-by: Dikshita Agarwal <quic_dikshita@quicinc.com>

driver/vidc/inc/msm_vidc_driver.h

@@ -474,9 +474,7 @@ int msm_vidc_vb2_queue_deinit(struct msm_vidc_inst *inst);
 int msm_vidc_get_control(struct msm_vidc_inst *inst, struct v4l2_ctrl *ctrl);
 struct msm_vidc_buffers *msm_vidc_get_buffers(struct msm_vidc_inst *inst,
 	enum msm_vidc_buffer_type buffer_type, const char *func);
-struct msm_vidc_mappings *msm_vidc_get_mappings(struct msm_vidc_inst *inst,
-	enum msm_vidc_buffer_type buffer_type, const char *func);
-struct msm_vidc_allocations *msm_vidc_get_allocations(
+struct msm_vidc_mem_list *msm_vidc_get_mem_info(
 	struct msm_vidc_inst *inst, enum msm_vidc_buffer_type buffer_type,
 	const char *func);
 struct msm_vidc_buffer *msm_vidc_get_driver_buf(struct msm_vidc_inst *inst,