Recovery: Loki patching support

Add support for automatically checking and making loki images
for locked bootloader bypass on loki supported devices. Loki
support is enabled with ENABLE_LOKI_RECOVERY.

Change-Id: I81fe267d58f0dda18a790e25df223f011dca3e37
Don't print any messages regarding sd-ext to the UI

 * It is ancient.

Change-Id: Ie2e31f9e3c8a2753dccb1bd42425cd5b0ce7780b