[SWDEV-484382] Fix VCLK/DCLK outputs for monitor, static, metric

Units were off and VCLK/DCLK outputs were not coming in
properly through amdsmi_get_clk_freq()

Now we match units sent back through rsmi_dev_gpu_clk_freq_get (MHz).

CLI now shows maximum of 2 VCLK/DCLKs otherwise shows N/A if there
is no current_freq listed.

Change-Id: I8a7b66cbb5263e8d396f8568c104e1ce3512923d
Signed-off-by: Charis Poag <Charis.Poag@amd.com>

py-interface/amdsmi_interface.py

@@ -3688,11 +3688,12 @@ def amdsmi_get_clk_freq(
         )
     )
 
-    return {
+    dict_ret = {
         "num_supported": freq.num_supported,
         "current": freq.current,
         "frequency": list(freq.frequency)[: freq.num_supported],
     }
+    return dict_ret
 
 
 def amdsmi_get_soc_pstate(