Fix `RGB_MATRIX_LED_COUNT` for aurora/corne (#19222)

keyboards/monstargear/xo87/solderable/config.h

@@ -33,7 +33,6 @@
 #define KEYLED_COLS 16
 #define KEYLED_ROW_PINS { E5,B4,B5,F0,C6,D5 }
 #define KEYLED_COL_PINS { C4,C2,C0,E0,D4,E4,B6,B2,F4,A0,F2,A4,F1,A7,D3,A3 }
-#define LED_DRIVER_LED_COUNT 93
 
 #define DIODE_DIRECTION ROW2COL
 #define RGB_DI_PIN D7

keyboards/splitkb/aurora/corne/rev1/config.h

@@ -28,9 +28,9 @@
 
 // Not yet available in `info.json`
 #ifdef RGB_MATRIX_ENABLE
-#    define RGB_MATRIX_MAXIMUM_BRIGHTNESS RGBLIGHT_LIMIT_VAL
-#    define RGB_MATRIX_LED_COUNT RGBLED_NUM
-#    define RGB_MATRIX_SPLIT RGBLED_SPLIT
+#    define RGB_MATRIX_MAXIMUM_BRIGHTNESS 128
+#    define RGB_MATRIX_LED_COUNT 54
+#    define RGB_MATRIX_SPLIT { 27, 27 }
 #    define SPLIT_TRANSPORT_MIRROR
 #endif