clk: tegra: EMC clock driver depends on EMC driver

The EMC clock driver uses symbols exported by the EMC driver, so it
needs the corresponding dependency to avoid build breakage.

Signed-off-by: Thierry Reding <treding@nvidia.com>
diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index 9897f35..ff20c48 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -158,3 +158,4 @@
 source "drivers/clk/mvebu/Kconfig"
 
 source "drivers/clk/samsung/Kconfig"
+source "drivers/clk/tegra/Kconfig"