Greece’s approval of a bailout deal overnight could persuade the European Central Bank to ease its funding squeeze on Athens as soon as Thursday, the first step in reopening banks and returning some normality to its stricken economy. Making a symbolic gesture, the bank could increase Emergency Liquidity Assistance (ELA) when its Governing Council meets, helping to restore confidence after Greece was nearly forced from the euro — a debate that challenged ECB President Mario Draghi’s pledge that the currency was irreversible.