Easier rotary encoder inversion code (#1326)

* Easier inversion code.

* Evaluate define INVERTED_ROTARY_ENCODER instead.

* Make Zorro roller direction more natural and matching also TX16S navigation style.

radio/src/targets/common/arm/stm32/rotary_encoder_driver.cpp

@@ -104,18 +104,14 @@ void rotaryEncoderCheck()
 #else
   uint8_t newPosition = ROTARY_ENCODER_POSITION();
   if (newPosition != rotencPosition && !(readKeys() & (1 << KEY_ENTER))) {
+#if defined(ROTARY_ENCODER_INVERT)
+    if (!((rotencPosition & 0x01) ^ ((newPosition & 0x02) >> 1))) {
+#else
     if ((rotencPosition & 0x01) ^ ((newPosition & 0x02) >> 1)) {
-#if defined(ROTARY_ENCODER_INVERT)
-      ++rotencValue;
-#else
-      --rotencValue;
 #endif
+      --rotencValue;
     } else {
-#if defined(ROTARY_ENCODER_INVERT)
-      --rotencValue;
-#else
       ++rotencValue;
-#endif
     }
     rotencPosition = newPosition;
 #endif