cpufreq: qcom-hw: Fix cpufreq_driver->get() for non-LMH systems

On a sc7180-based Chromebook, when I go to
/sys/devices/system/cpu/cpu0/cpufreq I can see:

cpuinfo_cur_freq:2995200
cpuinfo_max_freq:1804800
scaling_available_frequencies:300000 576000 ... 1708800 1804800
scaling_cur_freq:1804800
scaling_max_freq:1804800

As you can see the `cpuinfo_cur_freq` is bogus. It turns out that this
bogus info started showing up as of commit c72cf0cb1d77 ("cpufreq:
qcom-hw: Fix the frequency returned by cpufreq_driver->get()"). That
commit seems to assume that everyone is on the LMH bandwagon, but
sc7180 isn't.

Let's go back to the old code in the case where LMH isn't used.

Fixes: c72cf0cb1d77 ("cpufreq: qcom-hw: Fix the frequency returned by cpufreq_driver->get()")
Signed-off-by: Douglas Anderson <[e-mail]>
Reviewed-by: Konrad Dybcio <[e-mail]>
Reviewed-by: Manivannan Sadhasivam <[e-mail]>
[ Viresh: Fixed the 'fixes' tag ]
Signed-off-by: Viresh Kumar <[e-mail]>

drivers/cpufreq/qcom-cpufreq-hw.c

···
 	return lval * xo_rate;
 }
 
-/* Get the current frequency of the CPU (after throttling) */
-static unsigned int qcom_cpufreq_hw_get(unsigned int cpu)
-{
-	struct qcom_cpufreq_data *data;
-	struct cpufreq_policy *policy;
-
-	policy = cpufreq_cpu_get_raw(cpu);
-	if (!policy)
-		return 0;
-
-	data = policy->driver_data;
-
-	return qcom_lmh_get_throttle_freq(data) / HZ_PER_KHZ;
-}
-
 /* Get the frequency requested by the cpufreq core for the CPU */
 static unsigned int qcom_cpufreq_get_freq(unsigned int cpu)
 {
···
 	index = min(index, LUT_MAX_ENTRIES - 1);
 
 	return policy->freq_table[index].frequency;
+}
+
+static unsigned int qcom_cpufreq_hw_get(unsigned int cpu)
+{
+	struct qcom_cpufreq_data *data;
+	struct cpufreq_policy *policy;
+
+	policy = cpufreq_cpu_get_raw(cpu);
+	if (!policy)
+		return 0;
+
+	data = policy->driver_data;
+
+	if (data->throttle_irq >= 0)
+		return qcom_lmh_get_throttle_freq(data) / HZ_PER_KHZ;
+
+	return qcom_cpufreq_get_freq(cpu);
 }
 
 static unsigned int qcom_cpufreq_hw_fast_switch(struct cpufreq_policy *policy,