By Makiko Yamazaki TOKYO (Reuters) -Toshiba Corp announced on Monday that it now aims to break up into two companies instead of three, while also unveiling a big boost to planned shareholder returns in an effort to appease angry investors. Its revised plan, however, is still expected to face much pushback from foreign hedge funds, many of whom have been opposed to any kind of split and would prefer that the scandal-ridden Japanese conglomerate be taken private. Under the new restructuring, Toshiba will just spin off its devices business. Its previous plan had called for a three-way split – one…