Akemi bugfix for panel width > 32

due to a math accident, Akemi did not show proper GEQ bands in its hands when width>32

wled00/FX.cpp

@@ -7528,8 +7528,9 @@ uint16_t mode_2DAkemi(void) {
 
   //add geq left and right
   if (um_data && fftResult) {
-    for (int x=0; x < cols/8; x++) {
-      unsigned band = x * cols/8;
+    int xMax = cols/8;
+    for (int x=0; x < xMax; x++) {
+      unsigned band = map2(x, 0, max(xMax,4), 0, 15);  // map 0..cols/8 to 16 GEQ bands
       band = constrain(band, 0, 15);
       int barHeight = map(fftResult[band], 0, 255, 0, 17*rows/32);
       CRGB color = CRGB(SEGMENT.color_from_palette((band * 35), false, PALETTE_SOLID_WRAP, 0));