OPP: Rename 'rate_clk_single'

The field's name isn't clear enough. Rename it.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

drivers/opp/core.c

@@ -963,7 +963,7 @@ _opp_config_clk_single(struct device *dev, struct opp_table *opp_table,
 		dev_err(dev, "%s: failed to set clock rate: %d\n", __func__,
 			ret);
 	} else {
-		opp_table->rate_clk_single = freq;
+		opp_table->current_rate_single_clk = freq;
 	}
 
 	return ret;
@@ -1352,7 +1352,7 @@ int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
 		 * value of the frequency. In such a case, do not abort but
 		 * configure the hardware to the desired frequency forcefully.
 		 */
-		forced = opp_table->rate_clk_single != freq;
+		forced = opp_table->current_rate_single_clk != freq;
 	}
 
 	ret = _set_opp(dev, opp_table, opp, &freq, forced);

drivers/opp/opp.h

@@ -170,7 +170,7 @@ enum opp_table_access {
  * @clock_latency_ns_max: Max clock latency in nanoseconds.
  * @parsed_static_opps: Count of devices for which OPPs are initialized from DT.
  * @shared_opp: OPP is shared between multiple devices.
- * @rate_clk_single: Currently configured frequency for single clk.
+ * @current_rate_single_clk: Currently configured frequency for single clk.
  * @current_opp: Currently configured OPP for the table.
  * @suspend_opp: Pointer to OPP to be used during device suspend.
  * @required_opp_tables: List of device OPP tables that are required by OPPs in
@@ -219,7 +219,7 @@ struct opp_table {
 
 	unsigned int parsed_static_opps;
 	enum opp_table_access shared_opp;
-	unsigned long rate_clk_single;
+	unsigned long current_rate_single_clk;
 	struct dev_pm_opp *current_opp;
 	struct dev_pm_opp *suspend_opp;