pm: Remove most of ARM KHz Qos requirements

When requires ARM KHz QoS will override cpufreq min value.
That's why we "can not" set min value when touch booster is enabled,
We set it, then touch booster overrides it.

In other words, cpufreq min value control in userspace will have no effect.

Experimental still.

Signed-off-by: cocafe <cocafehj@gmail.com> (reverted from commit cc533b8e42dec9522d6dd4cf085801058f24eafb)
BLN: add rear cam flash.

-Not sure how useful this will be but I wanted to see if I could do
it. Works well. See notes in code for details.

-Use /sys/devices/virtual/misc/backlightnotification/blink_modes
to changes modes.

-Also fixed issue when blink_mode = 0 and backlight buttons stay
on.

Conflicts:

	drivers/misc/bln.c
	drivers/staging/mmio/st_mmio.c (reverted from commit fa45d2557c53c9fbfd2707123dc2df7869140ebf)