Now a regulator device can supply multiple consumers at the same time,
if a consumer starts and set a low voltage, another consumer doesn't
start in kernel but has been set a high frequency in bootloader will
abort.
This patch Adds support to limit min_uV during kernel startup to make
sure the voltage can suit the needs of all consumers.
Change-Id: Ibd16a8e44916798021e2470c90a8e3488df206f4
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
d7e9e2622d