clk: tegra: Add support for PLLSS

Tegra124 introduces a new PLL type, PLLSS. Add support for it.

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

diff --cc drivers/clk/tegra/clk-pll.c
Simple merge

diff --cc drivers/clk/tegra/clk.h
Simple merge