net: ethernet: eqos: fix eqos resume time

net: ethernet: eqos: fix eqos resume time

BRCM PHY reset happens through phy-reset-gpio, so no need of
performing soft reset through genphy_soft_reset() which actually
takes minimum 50msec to perform the operation.

Also removes the build warning since added low_power_mode
function pointer is void but the function defined as int.

Bug 200216733

Change-Id: I3b68aa8e5cc2c0cb0c701f0e3085aa6d24733172
Signed-off-by: Bhadram Varka <vbhadram@nvidia.com>
Reviewed-on: http://git-master/r/1282637
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
Reviewed-by: Narayan Reddy <narayanr@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>