ARC: perf: Rename DT binding to not confuse with power mgmt

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

Documentation/devicetree/bindings/arc/pct.txt

+* ARC Performance Counters
+
+The ARC700 can be configured with a pipeline performance monitor for counting
+CPU and cache events like cache misses and hits. Like conventional PCT there
+are 100+ hardware conditions dynamically mapped to upto 32 counters
+
+Note that:
+ * The ARC 700 PCT does not support interrupts; although HW events may be
+   counted, the HW events themselves cannot serve as a trigger for a sample.
+
+Required properties:
+
+- compatible : should contain
+	"snps,arc700-pct"
+
+Example:
+
+pmu {
+        compatible = "snps,arc700-pct";
+};

Documentation/devicetree/bindings/arc/pmu.txt

-* ARC Performance Monitor Unit
-
-The ARC 700 can be configured with a pipeline performance monitor for counting
-CPU and cache events like cache misses and hits.
-
-Note that:
- * ARC 700 refers to a family of ARC processor cores;
-   - There is only one type of PMU available for the whole family;
-   - The PMU may support different sets of events; supported events are probed
-     at boot time, as required by the reference manual.
-
- * The ARC 700 PMU does not support interrupts; although HW events may be
-   counted, the HW events themselves cannot serve as a trigger for a sample.
-
-Required properties:
-
-- compatible : should contain
-	"snps,arc700-pmu"
-
-Example:
-
-pmu {
-        compatible = "snps,arc700-pmu";
-};

arch/arc/boot/dts/angel4.dts

@@ -64,7 +64,7 @@ phy0: ethernet-phy@0 {
 		};
 
 		arcpmu0: pmu {
-			compatible = "snps,arc700-pmu";
+			compatible = "snps,arc700-pct";
 		};
 	};
 };

arch/arc/kernel/perf_event.c

@@ -346,7 +346,7 @@ static int arc_pmu_device_probe(struct platform_device *pdev)
 
 #ifdef CONFIG_OF
 static const struct of_device_id arc_pmu_match[] = {
-	{ .compatible = "snps,arc700-pmu" },
+	{ .compatible = "snps,arc700-pct" },
 	{},
 };
 MODULE_DEVICE_TABLE(of, arc_pmu_match);
@@ -354,7 +354,7 @@ MODULE_DEVICE_TABLE(of, arc_pmu_match);
 
 static struct platform_driver arc_pmu_driver = {
 	.driver	= {
-		.name		= "arc700-pmu",
+		.name		= "arc700-pct",
 		.of_match_table = of_match_ptr(arc_pmu_match),
 	},
 	.probe		= arc_pmu_device_probe,