ARM: tegra: clocks: separate tegra_clk_32k_ops from Tegra20 and Tegra30

Currently the tegra20 and tegra30 share the same symbol for
tegra_clk_32k_ops. This will cause a compile error when building
a tegra20-only kernel image. Add tegra_clk_32k_ops for tegra20 and
modify tegra30_clk_32k_ops for tegra30.

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
diff --git a/arch/arm/mach-tegra/tegra30_clocks_data.c b/arch/arm/mach-tegra/tegra30_clocks_data.c
index c924240..2673506 100644
--- a/arch/arm/mach-tegra/tegra30_clocks_data.c
+++ b/arch/arm/mach-tegra/tegra30_clocks_data.c
@@ -57,7 +57,7 @@
 static struct clk tegra_clk_32k = {
 	.name = "clk_32k",
 	.hw = &tegra_clk_32k_hw.hw,
-	.ops = &tegra_clk_32k_ops,
+	.ops = &tegra30_clk_32k_ops,
 	.flags = CLK_IS_ROOT,
 };