Merge integrate/meta-guf-machine/add-usb3503

Commit: https://gitlab.com/garz-fricke/yocto/layers/meta-guf-machine/-/commit/cc8b8e127a99a9ba9b45890d50932a6ac6fff526

linux:imx6:defconfig: Add USB3503 driver

Add the USB3503 HSIC USB-hub driver. This should  enable the internal
USB port for SANTARO and SANTOKA. At least it works for SANTOKA.

BCS 746-000359