Fixes the issue of RTL8221B-VB-CG not being detected correctly.
Reverts changes from f6c27b2, leaving only the read_c45 test.
Fixed: #15093
Signed-off-by: Mieczyslaw Nalewaj <namiltd@yahoo.com>
Avoid crashing the kernel when trying to detect early versions of
RealTek RTL8221B 2.5G Ethernet PHY.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>