clk: mediatek: Do a runtime PM get on controllers during probe

In the Linux kernel, the following vulnerability has been resolved:

clk: mediatek: Do a runtime PM get on controllers during probe

mt8183-mfgcfg has a mutual dependency with genpd during the probing

stage, which leads to a deadlock in the following call stack:

CPU0: genpd_lock --> clk_prepare_lock

genpd_power_off_work_fn()

genpd_lock()

generic_pm_domain::power_off()

clk_unprepare()

clk_prepare_lock()

CPU1: clk_prepare_lock --> genpd_lock

clk_register()

__clk_core_init()

clk_prepare_lock()

clk_pm_runtime_get()

genpd_lock()

Do a runtime PM get at the probe function to make sure clk_register()

won't acquire the genpd lock. Instead of only modifying mt8183-mfgcfg,

do this on all mediatek clock controller probings because we don't

believe this would cause any regression.

Verified on MT8183 and MT8192 Chromebooks.