soc: add info to identify the J722S SoC family

Include the part number for TI's j722s family of SoC
to identify it during boot.

Signed-off-by: Vaishnav Achath <vaishnav.a@ti.com>
Signed-off-by: Jayesh Choudhary <j-choudhary@ti.com>
2 files changed