armv8: fsl-lsch3: Instantiate TZASC configuration in 2 groups

Number of TZASC instances may vary across NXP SoCs.
So put TZASC configuration under instance specific defines.

Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
Signed-off-by: Ashish Kumar <Ashish.Kumar@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>