Revert "Gamma: WIP DO NOT MERGE DO NOT MERGE."

This reverts commit 20ed84188dc672478acf6c0ccbfb2a0cfb33a032.
msm: mdss: Display gamma control

TODO: confirm rgb channels, identify other tunables, cleanup,
apply values without switching screen (off and) on.

sysfs: /sys/devices/qcom,mdss_dsi_jdi_command_ors.69/*
Signed-off-by: Francisco Franco <franciscofranco.1990@gmail.com>
msm: mdss: Apply commands values without switching screen (off and) on

Signed-off-by: Francisco Franco <franciscofranco.1990@gmail.com>
msm: mdss: Remove tunable for command 32

Even slight changes look ugly or distort the screen.

Signed-off-by: Francisco Franco <franciscofranco.1990@gmail.com>
msm: mdss: distinguish between Gamma RGB polarity Positive/Negative

Signed-off-by: Paul Reioux <reioux@gmail.com>
Signed-off-by: Francisco Franco <franciscofranco.1990@gmail.com>
msm: Display Control: change the default sysfs path for something more readable.

Signed-off-by: Francisco Franco <franciscofranco.1990@gmail.com>