Tegra: compile PMC driver for Tegra132/Tegra210 platforms

The PMC driver is used only by Tegra210 and Tegra132 platforms. This
patch removes pmc.c from the common makefile and moves it to the
platform specific makefiles.

As a result, the PMC code from common code has been moved to Tegra132
and Tegra210 platform ports.

Change-Id: Ia157f70e776b3eff3c12eb8f0f02d30102670a98
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
diff --git a/plat/nvidia/tegra/soc/t210/plat_psci_handlers.c b/plat/nvidia/tegra/soc/t210/plat_psci_handlers.c
index bbbfcf5..4ef9558 100644
--- a/plat/nvidia/tegra/soc/t210/plat_psci_handlers.c
+++ b/plat/nvidia/tegra/soc/t210/plat_psci_handlers.c
@@ -579,6 +579,11 @@
 	/* Wait 1 ms to make sure clock source/device logic is stabilized. */
 	mdelay(1);
 
+	/*
+	 * Program the PMC in order to restart the system.
+	 */
+	tegra_pmc_system_reset();
+
 	return PSCI_E_SUCCESS;
 }