minor: improve documentation

Change-Id: I250209d45a57c5ad7d1265a68aa71fc31ec06f69
diff --git a/sysmoOCTSIM/ncn8025.h b/sysmoOCTSIM/ncn8025.h
index 89b7f86..a2a6459 100644
--- a/sysmoOCTSIM/ncn8025.h
+++ b/sysmoOCTSIM/ncn8025.h
@@ -15,8 +15,8 @@
 };
 
 struct ncn8025_settings {
-	bool rstin;	/* high: active */
-	bool cmdvcc;	/* high: active */
+	bool rstin;	/* Reset signal (true: asserted low) */
+	bool cmdvcc;	/* Command VCC pin. Activation sequence Enable (true: active low) */
 	bool simpres;	/* high: active */
 	bool led;	/* high: active */
 	bool interrupt;	/* high: active */