clk: tegra: Enable timer clock for tegra210

clk: tegra: Enable timer clock for tegra210

Various modules (eg SOR0 and SOR1) rely on the timer logic to function.
However this requirement is often undocumented. Also the power penality of
keeping this clock is negligible. So to prevent mysterious failures, keep
this clock always on.

Change-Id: Idc02b072c8471cc4b0cce0395dff7d68b8e5daa0
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Reviewed-on: http://git-master/r/1204416
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>