Currently supported Exar devices:

XR77103 [TQFN32], XR77128 [TQFN44], XR77129 [TQFN44], XRP7704 [TQFN40], XRP7708 [TQFN40], XRP7713 [TQFN32], XRP7714 [TQFN40], XRP7724 [TQFN44], XRP7725 [TQFN44], XRP7740 [TQFN40], XRP9710 [LGA45], XRP9711 [LGA45]