ocl_ext.hpp: Fix to evade redefinition errors in Homebrew #12501

Job	Run time
Smart_CI	24s
Docker	1m 12s
Build / Build	11m 30s
Conformance	0s
OpenVINO JS API	0s
Samples	0s
CPU functional tests	0s
iGPU Tests	0s
NVIDIA plugin	0s
dGPU Tests	0s
ONNX Runtime Integration	0s
ONNX Models Tests	0s
OpenVINO tokenizers extension	0s
Debian Packages / Debian Packages	2m 29s
C++ unit tests / C++ unit tests	1m 3s
Python unit tests / Python unit tests	5m 13s
Pytorch Layer Tests / PyTorch Layer Tests	3m 57s
TensorFlow Layer Tests	0s
PyTorch Models Nightly Scope1 tests	0s
TensorFlow Hugging Face Models tests	0s
TensorFlow TF Hub Models tests	0s
TensorFlow Models tests	0s
JAX/Flax Models tests	0s
PyTorch Models tests	0s
PyTorch Models Nightly Scope2 tests	0s
ci/gha_overall_status	1s
	25m 49s

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