I uploaded the kernel source on Github for 5.6.5, 5.7.3.1 & 5.7.4.1
https://github.com/mchubby-3rdparty/...rivers/usb/otg
Apparently the new .ko module is created because the MXC_OTG config item is selected in
https://github.com/mchubby-3rdparty/...ario_defconfig.
At some point scripts/gen_initramfs_list.sh includes both fsl_otg_arc.ko and ehci-hcd.ko in the intird
https://github.com/mchubby-3rdparty/...initramfs.list