refactor(versal-net): rename VERSAL_NET_IOU_SCNTRS register to generic

Refactor, the macro named VERSAL_NET_IOU_SCNTRS is being renamed to a more
generic macro name, which will be used in common code to enable reuse
across various platforms.

Change-Id: I548437e0fe2d73b196468bc92029f8099ea1f8d1
Signed-off-by: Prasad Kummari <prasad.kummari@amd.com>
2 files changed