sh_eth: stop using bare numbers for EESIPR values

Now  that we  have almost all EESIPR bits declared (and those  that are
still not are most probably reserved anyway) we can at last replace the
bare  numbers used for 'sh_eth_cpu_data::eesipr_value' initializers with
the bit names ORed together...

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>