cpufreq: Ensure the min_freq is lower than max_freq

* Libperfmgr increases the minimal frequency to 9999999 in order to boost
  the cpu to the maximal frequency. This usally works because it also
  increases the max frequency to 9999999 at init. However if we decrease
  the maximal frequency afterwards, which mi_thermald does, setting the
  minimal frequency to 9999999 fails because it exceeds the maximal
  frequency.

* We can allow setting a minimal frequency higher than the maximal
  frequency and setting a lower maximal frequency than the minimal
  frequency by adjusting the minimal frequency if it exceeds the
  maximal frequency.

Change-Id: I25b7ccde714aac14c8fdb9910857c3bd38c0aa05
Signed-off-by: Forenche <prahul2003@gmail.com>
Signed-off-by: Adithya R <gh0strider.2k18.reborn@gmail.com>

drivers/cpufreq/cpufreq.c

@@ -2252,7 +2252,7 @@ static int cpufreq_set_policy(struct cpufreq_policy *policy,
 	* because new_policy is a copy of policy with one field updated.
 	*/
 	if (new_policy->min > new_policy->max)
-		return -EINVAL;
+		new_policy->min = new_policy->max;
 
 	/* verify the cpu speed can be set within this limit */
 	ret = cpufreq_driver->verify(new_policy);