Parker McCollum and his wife Hallie Ray Light are currently expecting their first child — a baby boy — and ahead of the birth, the singer is serving up some details on the name they’ve picked out. In an interview with theSpencer Graves Show, McCollum revealed that the name he and his selected is Major Yancey McCollum — a fittingly Texan name for a child whose dad hails from the Lone Star state. The singer says he got the idea for the name after watching highlights of old championship college football games. “I saw [former Texas Longhorns quarterback] Major Applewhite, and I was like, ‘Damn, Ma…