ARM: at91/dt: remove useless uhpck clock references from ehci defintions

The uhpck is useless for High-Speed communications, remove the reference
to this clock in all ehci definitions.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

diff --cc arch/arm/boot/dts/at91sam9g45.dtsi
Simple merge

diff --cc arch/arm/boot/dts/at91sam9x5.dtsi
Simple merge

diff --cc arch/arm/boot/dts/sama5d3.dtsi
Simple merge

diff --cc arch/arm/boot/dts/sama5d4.dtsi
Simple merge