arm: mvebu: i2c come back in defconfig

When the patch "arm: mvebu: Use dw-apb-uart instead of ns16650 as UART
driver" was applied to a git tree and became the commit b24212fb
it wrongly removed the i2c support. This patch reintroduce it.
Signed-off-by: NGregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

arch/arm/configs/mvebu_defconfig

@@ -33,6 +33,8 @@ CONFIG_MVNETA=y
 CONFIG_MARVELL_PHY=y
 CONFIG_SERIAL_8250=y
 CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_I2C=y
+CONFIG_I2C_MV64XXX=y
 CONFIG_SERIAL_8250_DW=y
 CONFIG_GPIOLIB=y
 CONFIG_GPIO_SYSFS=y