[SWDEV-559082] Add asic info cache (#756)

Signed-off-by: adapryor <Adam.pryor@amd.com>

[ROCm/amdsmi commit: cba4c871d3]

projects/amdsmi/docs/how-to/amdsmi-cpp-lib.md

@@ -27,6 +27,12 @@ control the internal GPU metrics cache duration (ms).
 Default 1, set to 0 to disable.
 ```
 
+```{note}
+The environment variable ``AMDSMI_ASIC_INFO_CACHE_MS`` may be set to
+control the internal GPU asic info cache duration (ms). 
+Default 10000 ms, set to 0 to disable.
+```
+
 ```{seealso}
 Refer to the [C++ library API reference](../reference/amdsmi-cpp-api.md).
 ```