Changes made in switch nodes in d42c9ce commit causes problem with
correct mvsw61xx detection. This commit undo that changes.
mvsw61xx is platform driver, so it need to be in main root of dts.
Fixes: d42c9ce326 ("kirkwood: add kernel 4.19 support")
Tested-by: Marcin Fedan <mfedan@gmail.com> [EA4500]
Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
61b4018763