clk: meson: migrate muxes to clk_regmap

Move meson8b, gxbb and axg clocks using clk_mux to clk_regmap
Also remove a few useless tables in the process

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
3 files changed