arm64: versal: Add missing prototype for initialize_tcm

Add the missing prototype pointed by below sparse warning
warning: no previous prototype for 'initialize_tcm'
[-Wmissing-prototypes]

Signed-off-by: Algapally Santosh Sagar <santoshsagar.algapally@amd.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com>
Link: https://lore.kernel.org/r/20230609090531.31794-2-ashok.reddy.soma@amd.com


Signed-off-by: Michal Simek <michal.simek@amd.com>