ocl_ext.hpp: Fix to evade redefinition errors in Homebrew #37374

Job	Run time
Smart_CI	22s
Docker	51s
Build / Build	7m 59s
Debian Packages	0s
OpenVINO JS API	0s
Samples	0s
ONNX Runtime Integration	0s
CPU functional tests	0s
OpenVINO tokenizers extension	0s
PyTorch Models tests	0s
C++ unit tests / C++ unit tests	46s
Python unit tests / Python unit tests	2m 24s
Pytorch Layer Tests / PyTorch Layer Tests	2m 56s
TensorFlow Layer Tests	0s
TensorFlow Models tests	0s
ci/gha_overall_status_linux_arm64	1s
	15m 19s

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