Update to libdrm-2.4.89
I'm attempting to build xorg-server-1.20.8 on OI. This version of the X11 server requires libdrm >= 2.4.89, but the version supplied with OI is version 2.4.75. This restriction is built into the configure script. The server source requires macros and function prototypes that do not exist in version 2.4.75. I'm unable to build the X11 server.