Fix spi->clk_rate when it is odd to the nearest lowest even value because
minimum SPI divider is 2.
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Signed-off-by: Alain Volmat <alain.volmat@st.com>
Link: https://lore.kernel.org/r/1597043558-29668-4-git-send-email-alain.volmat@st.comSigned-off-by: Mark Brown <broonie@kernel.org>