xf86-video-amdgpu: Update version from 1.4.0 to 18.1.0

> I'm pleased to announce the 18.1.0 release of xf86-video-amdgpu, the
> Xorg driver for AMD Radeon GPUs supported by the amdgpu kernel driver.
> This release supports xserver versions 1.13-1.20.
>
> Highlights:
>
> * When using DC as of Linux 4.17:
>   - Support advanced colour management functionality.
>   - Support gamma correction and X11 colormaps when Xorg runs at depth
>     30 as well.
> * Support for leasing RandR outputs to clients.
> * Various robustness fixes for TearFree. In particular, fixed several
>   cases in which disabling TearFree at runtime would result in the Xorg
>   process freezing or crashing.
> * Fixed some m4 related build issues with older versions of autotools.

xf86-video-amdgpu.be0

@@ -1,6 +1,6 @@
 #!/usr/bin/env beesh
 
-# BEE_VERSION xf86-video-amdgpu-1.4.0-1
+# BEE_VERSION xf86-video-amdgpu-18.1.0-0
 
 ## this file was created by bee init and should be executed to build a
 ## bee-package. (Additional hints are located at the end of this file.)