tree 4cea3479e1ccd9d10887d34f7d3a9734f9a84666
parent b0cc68cf09a7dc2712fdad937b713017e137e1cb
author Chris Frantz <cfrantz@google.com> 1618259595 -0700
committer moidx <migue48@gmail.com> 1619467939 -0700

[mask_rom] Create unified error space

1. Create a unified error enum `rom_error_t` which builds up errors from
general categories, the source module and a specific error code.
2. Return such errors from the uart driver.

Note: the name `rom_error_t` was chosen so as to not conflict with `error_t`
defined by C++.

Signed-off-by: Chris Frantz <cfrantz@google.com>