This patch modifies the device tree for Tegra124 based devices to enable
the Cortex A15 PMU. The interrupt numbers are taken from NVIDIA Tegra K1
TRM (DP-06905-001_v03p). This patch was tested on a Jetson TK1.
Signed-off-by: Kyle Huey <khuey@kylehuey.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>