arm: mach-k3: common: Add a release_resources_for_core_shutdown() stub

Add a weak release_resources_for_core_shutdown() stub implementation
that can be overridden by actual implementation if a SoC supports that
function.

Signed-off-by: Suman Anna <s-anna@ti.com>
Reviewed-by: Nishanth Menon <nm@ti.com>
diff --git a/arch/arm/mach-k3/common.c b/arch/arm/mach-k3/common.c
index bb0f641..08b7344 100644
--- a/arch/arm/mach-k3/common.c
+++ b/arch/arm/mach-k3/common.c
@@ -193,6 +193,11 @@
 }
 #endif
 
+__weak void release_resources_for_core_shutdown(void)
+{
+	debug("%s not implemented...\n", __func__);
+}
+
 void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
 {
 	typedef void __noreturn (*image_entry_noargs_t)(void);