ARM: Let CONFIG_MACH_IMX31_DT be built by default

Let CONFIG_MACH_IMX31_DT be built by default.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
1 file changed