msm-regulator: increase ldo20 threshold

needed for normal touchscreen voltage

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

Change-Id: Id543c1432c4b8acf0e5329809145b360b0ef774f
defconfig: disable anzu touch undervolt

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

Change-Id: I7f6b5b0e98ccbfa30c94f34e20479008bdf656db