arch: mach-k3: Introduce basic files to support J722S SoC family

Introduce the basic functions and definitions needed to properly
initialize TI J722S family of SoCs.

Co-developed-by: Vaishnav Achath <vaishnav.a@ti.com>
Signed-off-by: Vaishnav Achath <vaishnav.a@ti.com>
Signed-off-by: Jayesh Choudhary <j-choudhary@ti.com>
diff --git a/arch/arm/mach-k3/include/mach/spl.h b/arch/arm/mach-k3/include/mach/spl.h
index 8394277..ac1a345 100644
--- a/arch/arm/mach-k3/include/mach/spl.h
+++ b/arch/arm/mach-k3/include/mach/spl.h
@@ -38,4 +38,8 @@
 #include "am62p_spl.h"
 #endif
 
+#ifdef CONFIG_SOC_K3_J722S
+#include "j722s_spl.h"
+#endif
+
 #endif /* _ASM_ARCH_SPL_H_ */