This reverts commit d4c206cfcf.
Reason for revert: exynos_devfreq is fixed by pa/2512847, and add 2 shiba DVT and 1 Husky DVT to reboot 5000 times, only one device hit ramdumpg with reset message "itmon triggering err_tmout from HSI1 PCIE_GEN3_0 to NOCL0_", but according to b/283930792, even without parallely module loading, device still hit this issue. so currently parallel module loading seems to be stable enough.
Bug: 285064434
Change-Id: I0356075a60cc0224ac975b401654b424ff4b993e