This reverts commit
245d6957794648d7fd83279c680fed6e4c262147.
libdrm now install headers in ${includedir}/libdrm and /usr/include/drm
is reserved for the kernel headers. We should only ever add one of these
to the CFLAGS.
Description: Userspace interface to kernel DRM services
Version: @PACKAGE_VERSION@
Libs: -L${libdir} -ldrm
-Cflags: -I${includedir} -I${includedir}/drm -I${includedir}/libdrm
+Cflags: -I${includedir} -I${includedir}/libdrm