Tegra194: implement handler to retrieve power domain tree

This patch implements the platform handler to return the pointer
to the power domain tree.

Change-Id: I74ea7002c7a461a028b4a252bbd354256fdc0647
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
diff --git a/plat/nvidia/tegra/soc/t194/plat_setup.c b/plat/nvidia/tegra/soc/t194/plat_setup.c
index 3424d19..7ca65dd 100644
--- a/plat/nvidia/tegra/soc/t194/plat_setup.c
+++ b/plat/nvidia/tegra/soc/t194/plat_setup.c
@@ -45,6 +45,14 @@
 	PLATFORM_MAX_CPUS_PER_CLUSTER
 };
 
+/*******************************************************************************
+ * This function returns the Tegra default topology tree information.
+ ******************************************************************************/
+const unsigned char *plat_get_power_domain_tree_desc(void)
+{
+	return tegra_power_domain_tree_desc;
+}
+
 /*
  * Table of regions to map using the MMU.
  */