Revert "avoid dtc warnings on re-compiling DTB"

As Vladimir Murzin reports in:

Older version of dtc don't support the options to suprress the warnings,
and so where people are stuck with said versions of dtc, using those
options results in a build failure rather than an ignoreable build

For now, let's revert the warning suppression. In future we can try to
do something smarter.

This reverts commit 1044c77062573985f7c994c3b6cef5695f57e955.

Signed-off-by: Mark Rutland <>
1 file changed