[PATCH v4 08/42] dm: core: Skip adding uclasses with OF_PLATDATA_INST

[Simon Glass]

There is no need to ever add new uclasses since these are set up at build
time. Update the code to return an error if this is attempted.

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

(no changes since v1)

 drivers/core/uclass.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

Applied to u-boot-dm/next, thanks!