net: bgmac: make it clear when setting interface type to RMII

It doesn't really change anything as BGMAC_CHIPCTL_1_IF_TYPE_RMII is
equal to 0. It make code a bit clener, so far when reading it one could
think we forgot to set a proper mode. It also keeps this mode code in
sync with other ones.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/bgmac.c

@@ -932,7 +932,8 @@ static void bgmac_chip_reset(struct bgmac *bgmac)
  et_swtype <<= 4;
  sw_type = et_swtype;
  } else if (bgmac->feature_flags & BGMAC_FEAT_SW_TYPE_EPHYRMII) {
- sw_type = BGMAC_CHIPCTL_1_SW_TYPE_EPHYRMII;
+ sw_type = BGMAC_CHIPCTL_1_IF_TYPE_RMII |
+ BGMAC_CHIPCTL_1_SW_TYPE_EPHYRMII;
  } else if (bgmac->feature_flags & BGMAC_FEAT_SW_TYPE_RGMII) {
  sw_type = BGMAC_CHIPCTL_1_IF_TYPE_RGMII |
  BGMAC_CHIPCTL_1_SW_TYPE_RGMII;