dt-bindings: usb: Add A100 compatible string

The Allwinner A100 contains two fully OHCI/EHCI compatible USB host
controllers. Add their compatible strings to the list of
generic OHCI/EHCI controllers.

Signed-off-by: Cody Eksal <masterr3c0rd@epochal.quest>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20241031070232.1793078-5-masterr3c0rd@epochal.quest


Signed-off-by: Chen-Yu Tsai <wens@csie.org>