Revert "mali/midas-power: Decrease minimum voltage boundary"

This reverts commit 8774e7b652920064d776997aeef9734a6cb57377.
mali/midas-power: Decrease minimum voltage boundary

mali:
Decrease minimum voltage initialisation data for MAX77686 on buck3 rail / vdd_g3d to minimum value as defined in regulator driver.
Decrease minimum voltage soft-limit in GPU voltage control to same value.

midas-power.c: Adjust min/max voltages of several regulators to properly support undervolting
Samsung ramfs: Add initial ramfs

(from firmware XXEMR2)
Boeffla ramfs: Add initial version