ARM: Kirkwood: Describe iConnects temperature sensor in DT.

Now that we have I2C support in DT, describe the LM63 in
the DT file for the iConnect.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>

diff --cc arch/arm/boot/dts/kirkwood-iconnect.dts
Simple merge

diff --cc arch/arm/mach-kirkwood/board-iconnect.c
Simple merge