Director Sam Mendes is rounding out the call sheet for “The Beatles — A Four-Film Cinematic Event,” his upcoming cinematic extravaganza about the wildly popular British band. “Bhaag Milkha Bhaag” star Farhan Akhtar will portray influential Indian composer Ravi Shankar, “Bohemian Rhapsody” actor Lucy Boynton is joining as British actress and girlfriend of Paul McCartney Jane Asher, “The Lord of the Rings: The Rings of Power” breakout Morfydd Clark will play John Lennon’s first wife Cynthia