test/intel/xe_guc_pc: Add debug message for gt freq

Adding a igt_debug() message for gt freq, it will be
useful to debug the xe_guc_pc igt test failures.

v2:
- Add missed freq argument to igt_debug(). [Riana]

Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com>
Reviewed-by: Riana Tauro <riana.tauro@intel.com>

tests/intel/xe_guc_pc.c

@@ -166,6 +166,8 @@ static uint32_t get_freq(int fd, int gt_id, const char *freq_name)
 	while (err == -EAGAIN)
 		err = igt_sysfs_scanf(gt_fd, freq_attr, "%u", &freq);
 
+	igt_debug("gt%d: %s freq %u\n", gt_id, freq_name, freq);
+
 	close(gt_fd);
 	return freq;
 }