feat(kernel): add DOCA OFED iSER and iSERT kmods with matched sentinels for kernel auto-upgrade

[ellie-di]

This PR adds iSER and iSERT kernel modules from the NVIDIA DOCA OFED stack as kernel subpackages, and wires them into the Azure Linux 4.0 kernel upgrade flow.

What this changes:

1. Adds kmod-iser and kmod-isert subpackages built from the DOCA OFED source stack.
2. Adds matched sentinel packages:
   • kmod-iser-matched
   • kmod-isert-matched
3. Adds kernel-side conditional rich dependencies so each installed kernel pulls the uname-r-matched iSER/iSERT kmod when the corresponding sentinel is installed.

Why:

1. Introduces RDMA target/transport modules from DOCA OFED into Azure Linux in a way that is compatible with multi-kernel installonly behavior.
2. Ensures automatic, deterministic module tracking across kernel upgrades.
3. Avoids manual reinstall/re-alignment of iSER/iSERT kmods after kernel updates.