raw/octeontx2_ep: fix shared library

raw/octeontx2_ep: fix shared library

The version of the PMD should not be overwritten with LIBABIVER.
All internal libs must have the same version.

Moreover, specifying LIBABIVER in the driver causes a symbolic link loop:
librte_rawdev_octeontx2_ep.so.1 -> librte_rawdev_octeontx2_ep.so.1

Fixes: 56d46d13f736 ("raw/octeontx2_ep: add build infra and device probe")

Reported-by: Ferruh Yigit <ferruh.yigit@intel.com>
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Tested-by: Ferruh Yigit <ferruh.yigit@intel.com>