Migrate build target markers to keyboard.json - Misc (#23609)

keyboards/matrix/m12og/rev1/keyboard.json

@@ -40,6 +40,8 @@
     "build": {
         "lto": true
     },
+    "bootloader": "custom",
+    "processor": "STM32F103",
     "layout_aliases": {
         "LAYOUT_all": "LAYOUT_tkl_ansi_tsangan"
     },

keyboards/matrix/m12og/rev1/rev1.c

@@ -29,4 +29,6 @@ void keyboard_post_init_kb(void) {
     rgblight_enable_noeeprom();
     rgblight_sethsv_noeeprom(5, 255, 255);
     rgblight_mode_noeeprom(37);
+
+    keyboard_post_init_user();
 }

keyboards/matrix/m12og/rev1/rules.mk

@@ -1,12 +1,6 @@
-# MCU name
-MCU = STM32F103
-
+# custom bootloader
 MCU_LDSCRIPT = m12og_v1
-
 BOARD = m12og_v1
 
-# Bootloader selection
-BOOTLOADER = custom
-
 CUSTOM_MATRIX = lite
 SRC += matrix.c

keyboards/matrix/m12og/rev2/rev2.c

@@ -4,10 +4,12 @@
 
 #include "quantum.h"
 
-void matrix_init_user(void) {
+void matrix_init_kb(void) {
 	setPinOutput(C6);
 	setPinOutput(B2);
 	setPinOutput(B1);
+
+    matrix_init_user();
 }
 
 bool led_update_kb(led_t led_state) {