thermal: samsung: Add TMU support for Exynos5260 SoCs

This patch adds the registers, bit fields and compatible strings
required to support for the 5 TMU channels on Exynos5260.

Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>