tree dd3a6e19376d3990f4cfef0a2b431410cf2af636
parent 57d24c2ba83ed3a7e2f704c43ad12dce40072620
author Cindy Chen <chencindy@google.com> 1591136611 -0700
committer sriyerg <46467186+sriyerg@users.noreply.github.com> 1595373391 -0700

[dv/common] initial support for shadow register

1. Add a tag for shadow register in dv_base_reg
2. Add a knob to control if user wants to
  a). write shadow register twice with the same values
  b). only write shadow register once (later use for error case)

Signed-off-by: Cindy Chen <chencindy@google.com>