Introduce a precedence-based implementation for reading manufacturing
data.
Manufacturing data can reside in either the secure-cert partition or the
fctry partition. To ensure backward compatibility with older modules
(where manufacturing data was stored in the fctry partition), this implementation
supports setting precedence between the available storage options.
Default precedence is factory first, i.e. implementation checks the data
in factory partition first and if not found falls back to check secure
cert partition.
This allows newer modules using secure-cert to coexist seamlessly with legacy ones.
Shubham Patil