avb: move error module to libavb
The libavb Rust wrappers are moving to //external/avb to make them more
widely available and keep them closer to the C source.
To keep CLs manageable, this is being done in smaller chunks. This first
CL just moves the error module over.
A few minor changes were necessary to split out some pvmfw-specific
error conditions from the generic libavb errors (e.g. requirements on
the shape of the vbmeta image).
Bug: b/290110273
Test: atest results unchanged from pre-patch
Change-Id: Iacef297bfb72e560890971e9e158c55f46cf0583
diff --git a/pvmfw/avb/src/lib.rs b/pvmfw/avb/src/lib.rs
index fdab990..9c3fe11 100644
--- a/pvmfw/avb/src/lib.rs
+++ b/pvmfw/avb/src/lib.rs
@@ -26,5 +26,5 @@
mod verify;
pub use descriptor::Digest;
-pub use error::{AvbIOError, AvbSlotVerifyError};
+pub use error::PvmfwVerifyError;
pub use verify::{verify_payload, Capability, DebugLevel, VerifiedBootData};