tree 3fedad289bfa75ebb02c027021a97c3869c0f929
parent 94fc70cb0b2eb943fe3bd2fbe74bcca466f07531
author Jayanth Othayoth <ojayanth@in.ibm.com> 1638537704 -0600
committer Jayanth Othayoth <ojayanth@in.ibm.com> 1638855658 -0600

PHAL: devtree file based attribute override support

This commits enables the file based devtree attribute override
attributes tool enabled feature to export attribute to override
file during "attributes write" command.
During devtree re-initiaization service execution, enabled
to import attribute override file based data to the devtree.

User can also manually create attribute override file by creating
cronus attribute override format file.
Example:
target = k0
ATTR_FREQ_PAU_MHZ    u32    0x000008ca

Signed-off-by: Jayanth Othayoth <ojayanth@in.ibm.com>
Change-Id: I21335c0c81249f4d60b235ea204d0e90420fd29c