ARM: dts: stm32: add USBPHYC and dual USB HS PHY support on stm32mp131

This patch adds support for USBPHYC and its two USB HS PHY on stm32mp131.

Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com>
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>