* recovery: Restore recovery_wait option
Restore the recovery_wait config.txt option. If this option is set
then recovery.bin will not rename itself or reboot. Instead flash
the activity LED on completion.
This option can be useful when creating an SD card to erase the
EEPROM or program the RPIBOOT gpio on multiple devices.
If recovery_wait=1 and recovery.bin is run from the SD card then
indicate success of erase_eeprom=1 or program_rpiboot_gpio=N was
set instead of requiring the EEPROM to be updated.
* Manufacture test updates for SDRAM.
