opencl: rename backend - funcs, structs, etc opencl2 -> opencl

Author: lhez

ggml/include/ggml-opencl.h

@@ -14,13 +14,13 @@ extern "C" {
 //
 // backend API
 //
-GGML_BACKEND_API ggml_backend_t ggml_backend_opencl2_init(void);
-GGML_BACKEND_API bool ggml_backend_is_opencl2(ggml_backend_t backend);
+GGML_BACKEND_API ggml_backend_t ggml_backend_opencl_init(void);
+GGML_BACKEND_API bool ggml_backend_is_opencl(ggml_backend_t backend);
 
-GGML_BACKEND_API ggml_backend_buffer_type_t ggml_backend_opencl2_buffer_type(void);
-GGML_BACKEND_API ggml_backend_buffer_type_t ggml_backend_opencl2_host_buffer_type(void);
+GGML_BACKEND_API ggml_backend_buffer_type_t ggml_backend_opencl_buffer_type(void);
+GGML_BACKEND_API ggml_backend_buffer_type_t ggml_backend_opencl_host_buffer_type(void);
 
-GGML_BACKEND_API ggml_backend_reg_t ggml_backend_opencl2_reg(void);
+GGML_BACKEND_API ggml_backend_reg_t ggml_backend_opencl_reg(void);
 
 #ifdef  __cplusplus
 }

ggml/src/ggml-backend-reg.cpp

@@ -151,7 +151,7 @@ struct ggml_backend_registry {
         register_backend(ggml_backend_vk_reg());
 #endif
 #ifdef GGML_USE_OPENCL
-        register_backend(ggml_backend_opencl2_reg());
+        register_backend(ggml_backend_opencl_reg());
 #endif
 #ifdef GGML_USE_CANN
         register_backend(ggml_backend_cann_reg());