Tegra194: Initialize smmu on system suspend exit

System suspend sequence involves initializing the SMMU
as a part of the system suspend exit, which is currently
not present for Tegra194 platform.

Thus call tegra_smmu_init() as a part of system suspend
exit.

Change-Id: I3086301743019e05a40fd221372e7f8713f286ae
Signed-off-by: Vignesh Radhakrishnan <vigneshr@nvidia.com>

plat/nvidia/tegra/soc/t194/plat_psci_handlers.c

@@ -331,6 +331,8 @@ int tegra_soc_pwr_domain_on_finish(const psci_power_state_t *target_state)
 
 		/* Init SMMU */
 
+		tegra_smmu_init();
+
 		/*
 		 * Reset power state info for the last core doing SC7
 		 * entry and exit, we set deepest power state as CC7