net: fsl_enetc: Inline register accessors

Move register accessors from header files and turn them into proper
inline functions, so typechecking can be done on them. Drop no longer
enetc_port_regs() and unused enetc_read() and enetc_bdr_read().

Signed-off-by: Marek Vasut <marex@denx.de>
3 files changed