net: stmmac: set initial EEE policy configuration

Set the initial eee_cfg values to have 'ethtool --show-eee ' display
the initial EEE configuration.

Fixes: 49168d19 ("net: phy: Add phy_support_eee() indicating MAC support EEE")
Cc: <stable@vger.kernel.org>
Signed-off-by: Choong Yong Liang <yong.liang.choong@linux.intel.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20241120083818.1079456-1-yong.liang.choong@linux.intel.com


Signed-off-by: Paolo Abeni <pabeni@redhat.com>