Fix accelerometer axis to have correct data for orientation (#563)

Author: german77

BetterJoyForCemu/Joycon.cs

@@ -1005,13 +1005,19 @@ private void ExtractIMUValues(byte[] report_buf, int n = 0) {
                 if (other == null && !isPro) { // single joycon mode; Z do not swap, rest do
                     if (isLeft) {
                         acc_g.X = -acc_g.X;
+                        acc_g.Y = -acc_g.Y;
                         gyr_g.X = -gyr_g.X;
                     } else {
                         gyr_g.Y = -gyr_g.Y;
                     }
 
-                    float temp = acc_g.X; acc_g.X = acc_g.Y; acc_g.Y = temp;
-                    temp = gyr_g.X; gyr_g.X = gyr_g.Y; gyr_g.Y = temp;
+                    float temp = acc_g.X;
+                    acc_g.X = acc_g.Y;
+                    acc_g.Y = -temp;
+
+                    temp = gyr_g.X;
+                    gyr_g.X = gyr_g.Y;
+                    gyr_g.Y = temp;
                 }
             }
         }