Prepare support to enable fsck.vfat on boot

SD_ROOT/wz_mini/etc/wz_mini.conf.dist

@@ -90,6 +90,7 @@ AUDIO_PROMPT_VOLUME="50"
 ENABLE_MP4_WRITE="false"
 NIGHT_DROP_DISABLE="false"
 DISABLE_MOTOR="false"
+ENABLE_FSCK_ON_BOOT="false"
 
 #####DEBUG#####
 #drops you to a shell via serial, doesn't load app_init.sh

SD_ROOT/wz_mini/wz_mini.conf

@@ -90,6 +90,7 @@ AUDIO_PROMPT_VOLUME="50"
 ENABLE_MP4_WRITE="false"
 NIGHT_DROP_DISABLE="false"
 DISABLE_MOTOR="false"
+ENABLE_FSCK_ON_BOOT="false"
 
 #####DEBUG#####
 #drops you to a shell via serial, doesn't load app_init.sh