This patch did:
1.Hard code the permanent attribute into u-boot.
2.Store first 112 bits of sha256(permanent attribute) hash into fuse.
(CONFIG_AVB_FUSE was removed because it's an irreversible operation)
3.Implement platform-specific operations defined in avb_atx_ops.h.

Change-Id: I65de9860e7c5ca1f7ebfbd87300faee0ccacaac3
Signed-off-by: ji.luo <ji.luo@nxp.com>