Convert topckgen and infracfg clock drivers to use the common
mtk_clk_simple_probe() mechanism and change this from the old
"static" CLK_OF_DECLARE to be a platform driver, allowing it
to eventually be built as a module.

Thanks to the conversion, more error handling was added to the clocks
registration.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20230306140543.1813621-19-angelogioacchino.delregno@collabora.comSigned-off-by: Stephen Boyd <sboyd@kernel.org>