ggml : add ggml-cpu.h to the public headers (#10204)

ggml/CMakeLists.txt

@@ -218,12 +218,12 @@ include(CMakePackageConfigHelpers)
 # all public headers
 set(GGML_PUBLIC_HEADERS
     include/ggml.h
+    include/ggml-cpu.h
     include/ggml-alloc.h
     include/ggml-backend.h
     include/ggml-blas.h
     include/ggml-cann.h
     include/ggml-cuda.h
-    include/ggml.h
     include/ggml-kompute.h
     include/ggml-metal.h
     include/ggml-rpc.h