drivers: pcnt: esp32c6: Add support

Add PCNT support to ESP32-C6.

Signed-off-by: Raffael Rostagno <raffael.rostagno@espressif.com>

Author: Raffael Rostagno

dts/riscv/espressif/esp32c6/esp32c6_common.dtsi

@@ -327,5 +327,14 @@
 			#pwm-cells = <3>;
 			status = "disabled";
 		};
+
+		pcnt: pcnt@60012000 {
+			compatible = "espressif,esp32-pcnt";
+			reg = <0x60012000 DT_SIZE_K(4)>;
+			interrupts = <PCNT_INTR_SOURCE IRQ_DEFAULT_PRIORITY 0>;
+			interrupt-parent = <&intc>;
+			clocks = <&rtc ESP32_PCNT_MODULE>;
+			status = "disabled";
+		};
 	};
 };