ARM: dts: am335x: align ti,pindir-d0-out-d1-in property with dt-shema

ti,pindir-d0-out-d1-in property is expected to be of type boolean.
Therefore, fix the property accordingly.

Fixes: 444d66fa ("ARM: dts: add spi wifi support to cm-t335")
Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>