Add Alt+VolUp+H key combo to hibernate system
Add Alt+VolUp+H key combo to hibernate system

This is needed for testing wake-from-hibernate.

BUG=chrome-os-partner:13680
BRANCH=link (if needed for factory, else none)
TEST=manual

1. Boot system.
2. alt+volup+h.  System hibernates (unless you've got hardware issue 13680)
3. Press power button.  System wakes.

Change-Id: I66e1299a948bffe22c10863a4ffbe5c507e2c5dd
Signed-off-by: Randall Spangler <62698fdbb84d1779579ee80c3f39fac22017e5bc@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/32442
Reviewed-by: Simon Glass <c00b0378376498bd9cd974c388df8854c0131d27@chromium.org>

fourier49/BIZ_EC,thehobn/ec,eatbyte/chromium-ec,longsleep/ec,akappy7/ChromeOS_EC_LED_Diagnostics,longsleep/ec,mtk09422/chromiumos-platform-ec,gelraen/cros-ec,thehobn/ec,fourier49/BZ_DEV_EC,gelraen/cros-ec,alterapraxisptyltd/chromium-ec,eatbyte/chromium-ec,coreboot/chrome-ec,eatbyte/chromium-ec,fourier49/BZ_DEV_EC,mtk09422/chromiumos-platform-ec,akappy7/ChromeOS_EC_LED_Diagnostics,akappy7/ChromeOS_EC_LED_Diagnostics,alterapraxisptyltd/chromium-ec,mtk09422/chromiumos-platform-ec,md5555/ec,mtk09422/chromiumos-platform-ec,fourier49/BIZ_EC,fourier49/BZ_DEV_EC,fourier49/BZ_DEV_EC,alterapraxisptyltd/chromium-ec,md5555/ec,fourier49/BIZ_EC,alterapraxisptyltd/chromium-ec,coreboot/chrome-ec,coreboot/chrome-ec,thehobn/ec,gelraen/cros-ec,md5555/ec,fourier49/BIZ_EC,akappy7/ChromeOS_EC_LED_Diagnostics,coreboot/chrome-ec,thehobn/ec,md5555/ec,gelraen/cros-ec,coreboot/chrome-ec,longsleep/ec,longsleep/ec,akappy7/ChromeOS_EC_LED_Diagnostics,coreboot/chrome-ec,eatbyte/chromium-ec