Modifying extraction tool to support P256.

This change alters the behavior of the factory extraction tool to query
the underlying IRPC HAL implementation for which ECC curve it supports.
The tool then chooses the correct corresponding production EEK chain
based on that to pass back into the HAL implementation for CSR
generation.

Bug: 215445120
Test: run the extraction tool
Change-Id: Ic80e38ec4c30eff970926ed269693ee1167b168c
2 files changed