Move RGB_MATRIX_DRIVER to data driven (#20350)

keyboards/bastardkb/charybdis/4x6/v1/elitec/info.json

@@ -6,6 +6,9 @@
     "ws2812": {
         "pin": "D3"
     },
+    "rgb_matrix": {
+        "driver": "WS2812"
+    },
     "matrix_pins": {
         "cols": ["D5", "C7", "F0", "D7", "E6", "B4"],
         "rows": ["F1", "B7", "C6", "D4", "B5"]

keyboards/bastardkb/charybdis/4x6/v1/elitec/rules.mk

@@ -15,7 +15,6 @@ AUDIO_SUPPORTED = no        # Audio is not supported.
 RGB_MATRIX_SUPPORTED = yes  # RGB matrix is supported and enabled by default.
 RGBLIGHT_SUPPORTED = yes    # RGB underglow is supported, but not enabled by default.
 RGB_MATRIX_ENABLE = yes     # Enable keyboard RGB matrix functionality
-RGB_MATRIX_DRIVER = WS2812
 
 # Charybdis is a split 4x6 keyboard with a maximum of 5 thumb keys (3 on the
 # trackball side).