tuna: recovery: protect important partitions

Formatting /factory, /boot, /sbl or /xloader is pointless and dangerous.

Change-Id: I32980c57a71e6f7e7bed761379ce157a035ffaf7
tuna: commonize what we can (1/4)

board-info.txt, bluetooth device name, ro.bq.gpu_to_cpu_unsupported.

Change-Id: I151ba8a7bd0c9b2a0ccf23fc97935bd63702047d