kevin: Change internal display default brightness

This changes the default battery brightness to 56.75% (quadratic
scale).

BUG=chrome-os-partner:56843
TEST=Manual
Check that 'backlight_tool --get_brightness_percent' returns 30.0

Change-Id: Ib84e5a27a229de087a477c870142e45b2526018b
Previous-Reviewed-on: https://chromium-review.googlesource.com/379611
(cherry picked from commit 33900c175c5a21d50954156b00f8a5b106742f62)
Reviewed-on: https://chromium-review.googlesource.com/381676
Reviewed-by: Derek Basehore <dbasehore@chromium.org>
Commit-Queue: Derek Basehore <dbasehore@chromium.org>
Tested-by: Derek Basehore <dbasehore@chromium.org>
diff --git a/overlay-kevin/chromeos-base/chromeos-bsp-kevin/chromeos-bsp-kevin-0.0.1-r12.ebuild b/overlay-kevin/chromeos-base/chromeos-bsp-kevin/chromeos-bsp-kevin-0.0.1-r13.ebuild
similarity index 100%
rename from overlay-kevin/chromeos-base/chromeos-bsp-kevin/chromeos-bsp-kevin-0.0.1-r12.ebuild
rename to overlay-kevin/chromeos-base/chromeos-bsp-kevin/chromeos-bsp-kevin-0.0.1-r13.ebuild
diff --git a/overlay-kevin/chromeos-base/chromeos-bsp-kevin/files/powerd_prefs/internal_backlight_no_als_battery_brightness b/overlay-kevin/chromeos-base/chromeos-bsp-kevin/files/powerd_prefs/internal_backlight_no_als_battery_brightness
new file mode 100644
index 0000000..7f3bf3c
--- /dev/null
+++ b/overlay-kevin/chromeos-base/chromeos-bsp-kevin/files/powerd_prefs/internal_backlight_no_als_battery_brightness
@@ -0,0 +1 @@
+56.75