Tegra: memctrl: platform setup handler functions

The driver initially contained the setup steps to help Tegra186
and Tegra194 SoCs. In order to support future SoCs and make sure
that the driver remains generic enough, some code should be moved
to SoC.

This patch creates a setup handler for a platform to implement its
initialization sequence.

Change-Id: I8bab7fd07f25e0457ead8e2d2713efe54782a59b
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
diff --git a/plat/nvidia/tegra/include/tegra_private.h b/plat/nvidia/tegra/include/tegra_private.h
index debd832..f1a4948 100644
--- a/plat/nvidia/tegra/include/tegra_private.h
+++ b/plat/nvidia/tegra/include/tegra_private.h
@@ -68,6 +68,11 @@
        image_info_t *bl33_image_info;
 };
 
+/*******************************************************************************
+* To suppress Coverity MISRA C-2012 Rule 2.2 violations
+*******************************************************************************/
+#define UNUSED_FUNC_NOP()	asm("nop")
+
 /* Declarations for plat_psci_handlers.c */
 int32_t tegra_soc_validate_power_state(uint32_t power_state,
 		psci_power_state_t *req_state);