clk: tegra: move tegra20 to common infra
clk: tegra: move tegra20 to common infra

Move tegra20 to common tegra clock infrastructure.

Signed-off-by: Peter De Schrijver <651dda1e35c6fe8f72c3112540c405a2364bcd71@nvidia.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs