radeon/llvm: Convert to Automake

v2: Johannes Obermayr <johannesobermayr@gmx.de>
    Fix some undefined symbols.

v3: Johannes Obermayr <johannesobermayr@gmx.de>
    Build it -shared to fix egl_gallium.so on r600/radeonsi builds.
diff --git a/configure.ac b/configure.ac
index e640b72..004f8cc 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2034,6 +2034,7 @@
 		src/gallium/drivers/nvc0/Makefile
 		src/gallium/drivers/r300/Makefile
 		src/gallium/drivers/r600/Makefile
+		src/gallium/drivers/radeon/Makefile
 		src/gallium/drivers/radeonsi/Makefile
 		src/gallium/drivers/rbug/Makefile
 		src/gallium/drivers/softpipe/Makefile