ARM: dts: aspeed: bletchley: Enable emmc and ehci1

Enable both emmc-controller and emmc nodes for storage soultion on
bletchley, and enable ehci1 node as second storage plan.

Signed-off-by: Potin Lai <potin.lai.pt@gmail.com>
Reviewed-by: Patrick Williams <patrick@stwcx.xyz>
Link: https://lore.kernel.org/r/20220929013130.1916525-3-potin.lai.pt@gmail.com


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