Uniformize STMicroelectronics copyrights headers and add SPDX
identifier.
Signed-off-by: NBenjamin Gaignard <benjamin.gaignard@st.com>
Acked-by: NAlexandre TORGUE <alexandre.torgue@st.com>
Acked-by: NPierre-Yves MORDRET <pierre-yves.mordret@st.com>
Acked-by: NM'boumba Cedric Madianga <cedric.madianga@gmail.com>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>