[WIP] [CPU] [ARM] Paged attention optimization for aarch64

[samkitshah1262]

Details:

• Closes [Feature Request]: Optimize PagedAttention operation on aarch64 HW #26422

[ashwins990]

Hi @samkitshah1262,
I am getting the following error while building the code [Aws Graviton 3E]

openvino/src/plugins/intel_cpu/src/nodes/kernels/scaled_attn/executor_pa_common.cpp:113:6: error: ‘JitMatMulVecAARCH64’ has not been declared
113 | void JitMatMulVecAARCH64::generate() {
| ^~~~~~~~~~~~~~~~~~~
openvino/src/plugins/intel_cpu/src/nodes/kernels/scaled_attn/executor_pa_common.cpp:113:6: warning: no previous declaration for ‘void ov::Extensions::Cpu::generate()’ [-Wmissing-declarations]
openvino/src/plugins/intel_cpu/src/nodes/kernels/scaled_attn/executor_pa_common.cpp: In function ‘void ov::Extensions::Cpu::generate()’:
openvino/src/plugins/intel_cpu/src/nodes/kernels/scaled_attn/executor_pa_common.cpp:115:10: error: ‘m_head_size’ was not declared in this scope

JitMatMulVecAARCH64 is not defined. Could you please check. Thanks !!

[github-actions]

This PR will be closed in a week because of 2 weeks of no activity.

[samkitshah1262]

Sorry @ashwins990 , couldn't work on this. Will look into this.

[github-actions]

This PR will be closed in a week because of 2 weeks of no activity.