clearfog: Rename the IRQ pin

Change-Id: If3fb149c0494c3053492ad597046346b85373d77
diff --git a/board/czechlight/clearfog/czechlight-clearfog.dts b/board/czechlight/clearfog/czechlight-clearfog.dts
index 53e212d..260ab3b 100644
--- a/board/czechlight/clearfog/czechlight-clearfog.dts
+++ b/board/czechlight/clearfog/czechlight-clearfog.dts
@@ -45,12 +45,12 @@
 };
 
 &gpio1 {
-	mikrobus_pwm {
+	spi_int {
 		/* MPP54: this needs an external pull-up */
 		gpio-hog;
 		gpios = <22 GPIO_ACTIVE_HIGH>;
 		input;
-		line-name = "MAX14830-MCP23S17-int";
+		line-name = "SPI-INT";
 	};
 };