Move RGB_MATRIX_DRIVER to data driven (#20350)

keyboards/rgbkb/pan/info.json

@@ -8,6 +8,9 @@
         "pid": "0x8C9C",
         "device_version": "0.0.2"
     },
+    "rgb_matrix": {
+        "driver": "custom"
+    },
     "layouts": {
         "LAYOUT_all": {
             "layout": [

keyboards/rgbkb/pan/rev1/rules.mk

@@ -1,5 +1,2 @@
 # The default configuration is a atmega32a
 DEFAULT_FOLDER = rgbkb/pan/rev1/32a
-
-RGB_MATRIX_DRIVER = custom
-WS2812_DRIVER_REQUIRED := yes

keyboards/rgbkb/pan/rules.mk

@@ -9,7 +9,6 @@ COMMAND_ENABLE = no         # Commands for debug and configuration
 NKRO_ENABLE = no            # Enable N-Key Rollover
 AUDIO_ENABLE = no           # Audio output
 RGB_MATRIX_ENABLE = yes
-RGB_MATRIX_DRIVER = WS2812
 ENCODER_ENABLE = yes
 OLED_ENABLE = yes
 OLED_DRIVER = SSD1306
@@ -20,3 +19,5 @@ STAGGERED_LAYOUT = no # If you soldered R1-A12 and R4-A12, enable this.
 
 # Default to revision 1
 DEFAULT_FOLDER = rgbkb/pan/rev1
+
+WS2812_DRIVER_REQUIRED := yes