Revert "ARM: mm: update __v7_setup() to the new LoUIS cache maintenance API"

This reverts commit c352f1b2152adc86f7f23bc752ee32a537e85fc6.
Revert "arm/dt: msm8974-regulator: Sync with CAF"

This reverts commit 2f421f93b3b676c8077a0181282a28a42f4e3d18.