[Bug] Fix compile issue with LED Matrix (#17658)

quantum/led_matrix/led_matrix.c

@@ -619,13 +619,13 @@ void led_matrix_decrease_speed(void) {
 }
 
 void led_matrix_set_flags_eeprom_helper(led_flags_t flags, bool write_to_eeprom) {
-    led_matrix_config.flags = flags;
+    led_matrix_eeconfig.flags = flags;
     eeconfig_flag_led_matrix(write_to_eeprom);
-    dprintf("led matrix set speed [%s]: %u\n", (write_to_eeprom) ? "EEPROM" : "NOEEPROM", led_matrix_config.flags);
+    dprintf("led matrix set speed [%s]: %u\n", (write_to_eeprom) ? "EEPROM" : "NOEEPROM", led_matrix_eeconfig.flags);
 }
 
 led_flags_t led_matrix_get_flags(void) {
-    return led_matrix_config.flags;
+    return led_matrix_eeconfig.flags;
 }
 
 void led_matrix_set_flags(led_flags_t flags) {