[PATCH v2 18/33] dtoc: Warn of duplicate drivers

[Simon Glass]

If drivers have the same name then we cannot distinguish them. This only
matters if the driver is actually used by dtoc, but in that case, issue
a warning.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

(no changes since v1)

 tools/dtoc/src_scan.py      | 28 ++++++++++-
 tools/dtoc/test_src_scan.py | 95 +++++++++++++++++++++++++++++++++++++
 2 files changed, 122 insertions(+), 1 deletion(-)

Applied to u-boot-dm, thanks!