gnu: Add opencl-headers-2022.

* gnu/packages/opencl.scm (opencl-headers-2022): New variable.
* gnu/packages/machine-learning.scm (tvm)[inputs]: Add
opencl-headers-2022; delete opencl-headers.

Merges guix/guix!1879

Change-Id: Ib4d73ad530e374669e34b4ea6744eeab8b8ef668

gnu/packages/machine-learning.scm

@@ -4666,7 +4666,7 @@ the tensors contained therein.")
                     libxml2
                     llvm-19
                     opencl-clhpp
-                    opencl-headers
+                    opencl-headers-2022
                     rang
                     mesa
                     mesa-opencl

gnu/packages/opencl.scm

@@ -83,6 +83,21 @@
     (home-page "https://registry.khronos.org/OpenCL/")
     (license license:asl2.0)))
 
+(define-public opencl-headers-2022
+  (package
+    (inherit opencl-headers)
+    (name "opencl-headers")
+    (version "2022.09.30")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+              (url "https://github.com/KhronosGroup/OpenCL-Headers")
+              (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32 "0vzzkj5kd0invm5pvzlnhdl21n00jci6131a2cjviyz0vxp7xf2m"))))))
+
 (define-public opencl-clhpp
   (package
     (name "opencl-clhpp")