/usr/powerpc64le-linux-gnu/include/drm/ is in linux-libc-dev-ppc64el-cross 3.13.0-13.33cross0.2.
This file is owned by root:root, with mode 0o755.
..
/usr/powerpc64le-linux-gnu/include/drm/drm.h
/usr/powerpc64le-linux-gnu/include/drm/drm_fourcc.h
/usr/powerpc64le-linux-gnu/include/drm/drm_mode.h
/usr/powerpc64le-linux-gnu/include/drm/drm_sarea.h
/usr/powerpc64le-linux-gnu/include/drm/exynos_drm.h
/usr/powerpc64le-linux-gnu/include/drm/i810_drm.h
/usr/powerpc64le-linux-gnu/include/drm/i915_drm.h
/usr/powerpc64le-linux-gnu/include/drm/mga_drm.h
/usr/powerpc64le-linux-gnu/include/drm/msm_drm.h
/usr/powerpc64le-linux-gnu/include/drm/nouveau_drm.h
/usr/powerpc64le-linux-gnu/include/drm/qxl_drm.h
/usr/powerpc64le-linux-gnu/include/drm/r128_drm.h
/usr/powerpc64le-linux-gnu/include/drm/radeon_drm.h
/usr/powerpc64le-linux-gnu/include/drm/savage_drm.h
/usr/powerpc64le-linux-gnu/include/drm/sis_drm.h
/usr/powerpc64le-linux-gnu/include/drm/tegra_drm.h
/usr/powerpc64le-linux-gnu/include/drm/via_drm.h
/usr/powerpc64le-linux-gnu/include/drm/vmwgfx_drm.h