ARM: tegra: Hide EMC scaling config behind ARCH_TEGRA

The option isn't terribly useful on other ARM platforms.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
1 file changed