`checkpatch.pl` requires that dts sources are indented with tabs,
fix all the spaces that slipped in while checkpatch wasn't watching.
Signed-off-by: Jordan Yates <jordan@embeint.com>
Running the tests/subsys/lorawan/clock_sync/ requires a long timeout
to pass. Set a timeout: 500 to cover most of the usecase
Signed-off-by: Francois Ramu <francois.ramu@st.com>
