Make minimum manual brightness setting to 2

On some devices the disable backlight complete turns off already at value 1, thus need to increase to minimum 2.

Issue: FP3-A11#417
Change-Id: I0c790e98afbb46b63a0fc7cd21bb5d46ac34fdae
diff --git a/overlay/frameworks/base/core/res/res/values/config.xml b/overlay/frameworks/base/core/res/res/values/config.xml
index 2d950cf..a0985ae 100644
--- a/overlay/frameworks/base/core/res/res/values/config.xml
+++ b/overlay/frameworks/base/core/res/res/values/config.xml
@@ -123,7 +123,7 @@
 
     <!-- Minimum screen brightness setting allowed by the power manager.
          The user is forbidden from setting the brightness below this level. -->
-    <integer name="config_screenBrightnessSettingMinimum">1</integer>
+    <integer name="config_screenBrightnessSettingMinimum">2</integer>
 
     <!-- Array of light sensor LUX values to define our levels for auto backlight brightness support.
          The N entries of this array define N + 1 control points as follows: