stmmac: intel: change all EHL/TGL to auto detect phy addr

Set all EHL/TGL phy_addr to -1 so that the driver will automatically
detect it at run-time by probing all the possible 32 addresses.

Signed-off-by: Voon Weifeng <weifeng.voon@intel.com>
Signed-off-by: Wong Vee Khee <vee.khee.wong@intel.com>
Link: https://lore.kernel.org/r/20201106094341.4241-1-vee.khee.wong@intel.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>