phy: cadence-torrent: Add platform dependent initialization structure

Add platform dependent initialization data for Torrent PHY used in TI's
J721E SoC.

Signed-off-by: Swapnil Jakhade <sjakhade@cadence.com>
Signed-off-by: Yuti Amonkar <yamonkar@cadence.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>