net: phy: Add MDIO_PMA_CTRL1_SPEED for 2.5G and 5G to reflect PMA values

net: phy: Add MDIO_PMA_CTRL1_SPEED for 2.5G and 5G to reflect PMA values

The 2.5G and 5G values are not consistent between the PCS CTRL1 and PMA
CTRL1 values. In order to avoid confusion between the two I am updating the
values to include "PMA" in the name similar to values used in similar
places.

To avoid breaking UAPI I have retained the original macros and just defined
them as the new PMA based defines.

Signed-off-by: Alexander Duyck <alexanderduyck@fb.com>
Link: https://patch.msgid.link/176374319569.959489.6610469879021800710.stgit@ahduyck-xeon-server.home.arpa
Signed-off-by: Paolo Abeni <pabeni@redhat.com>