Need round ltdc clock witch using a SCMI clock parent. Change-Id: I978aed2fbd8c173cfc0ce9c587aa39396a5d6952 Signed-off-by: Gabriel Fernandez <gabriel.fernandez@foss.st.com> Reviewed-on: https://gerrit.st.com/c/mpu/oe/st/linux-stm32/+/234117 Reviewed-by: CITOOLS <MDG-smet-aci-reviews@list.st.com> Reviewed-by: Eric FOURMONT <eric.fourmont-ext@st.com> Tested-by: Eric FOURMONT <eric.fourmont-ext@st.com>