arm: exynos5410: dts: add tmu nodes for exynos5410 SoC

Exynos5420 SoC has per core thermal management unit, this patch adds
tmu nodes for all the four A15 cpu cores.
ARM: odroidxu_defconfig: enable exynos5410 devfreq and exynos thermal core drivers

This enables the exynos5410 devfreq, exynos thermal core drivers.