octeontx2-af: RPM: Fix mismatch in lmac type

[ Upstream commit 7ebbbb23 ]

Due to a bug in the previous patch, there is a mismatch
between the lmac type reported by the driver and the actual
hardware configuration.

Fixes: 3ad3f8f9 ("octeontx2-af: cn10k: MAC internal loopback support")
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>