net: mtk_eth_soc: add mask and update PCS speed definitions

The PCS speed setting is a two bit field, but it is defined as two
separate bits. Add a bitfield mask for the speed definitions, an
 use the FIELD_PREP() macro to define each PCS speed.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Russell King (Oracle) 2022-05-18 15:54:42 +01:00 • committed by Jakub Kicinski
commit bc5e93e0cd