clk: tegra: add clock support for Tegra30

Add Tegra30 clock support based on common clock framework.

Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
[swarren: ensure all OF lookups return valid cookies i.e. an explicit
error pointer or valid pointer not NULL, adapt to renames in earlier
patches, fixed some checkpatch issues.]
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
diff --git a/drivers/clk/tegra/Makefile b/drivers/clk/tegra/Makefile
index 00484fd..2b41b0f 100644
--- a/drivers/clk/tegra/Makefile
+++ b/drivers/clk/tegra/Makefile
@@ -8,3 +8,4 @@
 obj-y					+= clk-super.o
 
 obj-$(CONFIG_ARCH_TEGRA_2x_SOC)         += clk-tegra20.o
+obj-$(CONFIG_ARCH_TEGRA_3x_SOC)         += clk-tegra30.o