Henry Cavill's Girlfriend Reportedly Gives Birth to First Child

Henry Cavill's gone from Kal-El to Jor-El ... 'cause he just welcomed his own little super-son or super-daughter -- according to multiple reports. The actor and his girlfriend -- Natalie Viscuso -- have welcomed their first child together, according to People ... though no other details about their little one were shared. Speculation about their newborn baby kicked off earlier Sunday when the Daily Mail shared…