ARM: tegra: don't pass CPU ID to tegra_{set,clear}_cpu_in_lp2

tegra_{set,clear}_cpu_in_lp2 can easily determine which CPU ID they are
running on; there is no need to pass the CPU ID into those functions.
So, remove their CPU ID function parameter.

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>