one doesn't have access to hardware drivers that
use ION.
+config ION_ROCKCHIP
+ tristate "Ion for Rockchip"
+ depends on ARCH_ROCKCHIP && ION
+ help
+ Choose this option if you wish to use ion on an Rockchip.
+
config ION_TEGRA
tristate "Ion for Tegra"
depends on ARCH_TEGRA && ION