ARM: dts: Odroid U2/U3: add boost frequencies.

The boost frequencies OPPs and clock values are extracted from the
HardKernel repository and authored by Gu1 <gu1@aeroxteam.fr>.
ARM: dts: Exynos: Odroid U2/U3: fix freeze when reading clk_summary.

Set the isp power domain to always on to avoid a freeze when
reading the debugfs entry clk_summary on Odroid U2/U3.