When converting to ofnode `ofnode_read_u32` was accedentally used to
replace `fdtdec_get_int` instead of `ofnode_read_u32_default`.
Use `ofnode_read_u32_default` to fix this.
Fixes: 59382d2 ("pinctrl: imx: Convert to use livetree API for fdt access") Signed-off-by: Jesse Taube <Mr.Bossman075@gmail.com>