ARM: dts: mx28: Adjust the digctl compatible string

MX28 has the same DIGCTL block as MX23, so adjust the compatible string to
reflect that.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
1 file changed