ARM: dts: stm32: add support for USB2514B onboard hub on stm32mp15xx-dkx

Add support for USB2514B onboard hub on stm32mp15 DK boards. The HUB
is supplied by a 3v3 PMIC regulator.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Link: https://lore.kernel.org/r/20220726080708.162547-4-fabrice.gasnier@foss.st.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>