ARM: dts: aspeed: rainier and everest: Enable UHCI

The UHCI controller is necessary to talk to slower, USB1.1 devices, so
enable the UHCI controller in the device tree.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20220128214852.21551-4-eajames@linux.ibm.com


Signed-off-by: Joel Stanley <joel@jms.id.au>