[SWDEV-488303] Adjusted process vram_mem data source (#411)

* [SWDEV-488303] Adjusted process vram_mem data source
* Standardized sscanf format strings

---------

Signed-off-by: Maisam Arif <Maisam.Arif@amd.com>
Co-authored-by: gabrpham_amdeng <Gabriel.Pham@amd.com>

[ROCm/amdsmi commit: 42441c78ea]

projects/amdsmi/docs/reference/amdsmi-py-api.md

@@ -1107,9 +1107,9 @@ Field | Description
 ---|---
 `name` | Name of process. If user does not have permission this will be "N/A"
 `pid` | Process ID
-`mem` | Process memory usage
+`mem` | Process memory usage in Bytes
 `engine_usage` | <table><thead><tr> <th> Subfield </th> <th> Description</th> </tr></thead><tbody><tr><td>`gfx`</td><td>GFX engine usage in ns</td></tr><tr><td>`enc`</td><td>Encode engine usage in ns</td></tr></tbody></table>
-`memory_usage` | <table><thead><tr> <th> Subfield </th> <th> Description</th> </tr></thead><tbody><tr><td>`gtt_mem`</td><td>GTT memory usage</td></tr><tr><td>`cpu_mem`</td><td>CPU memory usage</td></tr><tr><td>`vram_mem`</td><td>VRAM memory usage</td></tr> </tbody></table>
+`memory_usage` | <table><thead><tr> <th> Subfield </th> <th> Description</th> </tr></thead><tbody><tr><td>`gtt_mem`</td><td>GTT memory usage in Bytes</td></tr><tr><td>`cpu_mem`</td><td>CPU memory usage in Bytes</td></tr><tr><td>`vram_mem`</td><td>VRAM memory usage in Bytes</td></tr> </tbody></table>
 `cu_occupancy` | Number of Compute Units utilized
 
 Exceptions that can be thrown by `amdsmi_get_gpu_process_list` function: