libdrm: Update version from 2.4.93 to 2.4.94

Change-log from [announcement][1]:

> Benjamin Gaignard (2):
>       tests/modetest: Add atomic support
>       tests/util: Add support for stm module
>
> Christian König (7):
>       amdgpu: stop using the hash table for fd_tab
>       amdgpu: add handle table implementation v2
>       amdgpu: use handle table for KMS handles
>       amdgpu: use handle table for flink names
>       amdgpu: remove the hash table implementation
>       amdgpu: always add all BOs to handle table
>       amdgpu: fix off by one in handle_table_insert
>
> Junwei Zhang (5):
>       amdgpu: add bo from user memory to handle table
>       amdgpu: add a function to find bo by cpu mapping (v2)
>       tests/amdgpu: add test for finding bo by CPU mapping
>       amdgpu: free flink bo in bo import
>       amdgpu: add a function to create amdgpu bo internally (v4)
>
> Kristian H. Kristensen (1):
>       Bump to version 2.4.94
>
> Likun Gao (1):
>       amdgpu: Disable deadlock test suite for RV
>
> Michel Dänzer (2):
>       amdgpu: Use uint32_t i in amdgpu_find_bo_by_cpu_mapping
>       amdgpu: Eliminate void* arithmetic in amdgpu_find_bo_by_cpu_mapping
>
> Mike Lothian (1):
>       libdrm: Fix amdgpu build failure
>
> Rob Clark (2):
>       freedreno: don't leak stateobj rb refs
>       freedreno: fix use-after-free with stateobj rb's
>
> Rodrigo Vivi (1):
>       intel: Add a new CFL PCI ID.
>
> Tanmay Shah (1):
>       libdrm: add msm drm uapi header

[1]: https://lists.freedesktop.org/archives/dri-devel/2018-August/187286.html

libdrm.be0

@@ -1,6 +1,6 @@
 #!/usr/bin/env beesh
 
-# BEE_VERSION libdrm-2.4.93-0
+# BEE_VERSION libdrm-2.4.94-0
 
 ## 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.)