[SWDEV-523359] fan_read_write: Add set fan speed validation check. (#61)

[SWDEV-523359] fan_read_write: Add set fan speed validation check.
- Handled NOT_SUPPORTED status which previously caused rsmitst to false fail
- Added continute statement to proceed with rest of FanReadWrite test.
- fixed spacing line 140

Signed-off-by: Juan Castillo <juan.castillo@amd.com>

[ROCm/rocm_smi_lib commit: ac31c6e576]

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

@@ -137,6 +137,10 @@ void TestFanReadWrite::Run(void) {
     }
 
     ret = rsmi_dev_fan_speed_set(dv_ind, 0, new_speed);
+    if (ret == RSMI_STATUS_NOT_SUPPORTED) {
+      std::cout << "***System fan set is not supported." << std::endl;
+      continue;
+    }
     CHK_ERR_ASRT(ret)
 
     sleep(4);