clk: tegra: introduce common gen4 super clock

Introduce a common function which performs super clock initialization for
Tegra114 and beyond.

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

diff --cc drivers/clk/tegra/Makefile
Simple merge

diff --cc drivers/clk/tegra/clk-tegra-super-gen4.c
Simple merge

diff --cc drivers/clk/tegra/clk-tegra114.c
Simple merge

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