feat(per-cpu): introduce framework accessors/definers

Introduce per-cpu framework definers and accessors for allocation and
access of per-cpu objects. The accessors support "per_cpu_cur" variants
fo

feat(per-cpu): introduce framework accessors/definers

Introduce per-cpu framework definers and accessors for allocation and
access of per-cpu objects. The accessors support "per_cpu_cur" variants
for access on the calling CPU as well as "per_cpu_by_index" variants for
access on any CPU. Additionally, the framework supports NUMA-aware
allocation, allowing the per-cpu data to be distributed across different
memory nodes. This enables the system to allocate per-cpu data on memory
nodes closest to the respective CPU, optimising memory access and
performance.

Signed-off-by: Sammit Joshi <sammit.joshi@arm.com>
Signed-off-by: Rohit Mathew <rohit.mathew@arm.com>
Change-Id: I8361602ff626dcfe9405e7e2a28c5d143aaac574

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