Skip TestFrequenciesReadWrite for unsupported ASICs

For ASICs NAVI10 and above setting display clock [DCEFCLK] is not supported and the sysfs entry is
read-only. As a result, the test falsely fails for these ASICs. ROCm SMI Lib is ASIC independent.
So Display clock set cannot be selectively disabled for these ASICs.

As a compromise if the set (write to sysfs entry) fails due to permission error and euid is root,
assume that set feature is not supported and skip the test.

Change-Id: I7a273878cbf1465b01728705323e8a92a42378dd


[ROCm/rocm_smi_lib commit: c6f695f5a9]

projects/rocm-smi-lib/tests/rocm_smi_test/functional/frequencies_read_write.cc

@@ -141,8 +141,15 @@ void TestFrequenciesReadWrite::Run(void) {
                                                                     std::endl;
         }
         ret = rsmi_dev_gpu_clk_freq_set(dv_ind, rsmi_clk, freq_bitmask);
+        //Certain ASICs does not allow to set particular clocks. If set function for a clock returns
+        //permission error despite root access, manually set ret value to success and return
+        if (ret == RSMI_STATUS_PERMISSION && geteuid() == 0) {
+          std::cout << "\t**Set " << FreqEnumToStr(rsmi_clk) <<
+                              ": Not supported on this machine. Skipping..." << std::endl;
+          ret = RSMI_STATUS_SUCCESS;
+          return;
+        }
         CHK_ERR_ASRT(ret)
-
         ret = rsmi_dev_gpu_clk_freq_get(dv_ind, rsmi_clk, &f);
         if (ret != RSMI_STATUS_SUCCESS) {
           return;