ALS: wake up ALS task when switched to RW mode
ALS: wake up ALS task when switched to RW mode

Enabling of ALS is done during resume hook.
During EC sw sync, resume hook is not called
and hence ALS task wont run.
Adding init hook to wake up the ALS task.

BUG=chrome-os-partner:48418
BRANCH=none
TEST= On Kunimitsu board, ensure sw sync is enabled.
In OS, cat /sys/bus/iio/devices/iio:devicesx/in_illuminace_input
should output valid value and not zero.

Change-Id: Iba1a3ab2cf7bfc2d8aa36cf9bb9b762f398882c3
Signed-off-by: Jagadish Krishnamoorthy <dc5f01fee5a925b1884aa0fe53687fdf8ecdfb09@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/317030
Commit-Ready: Freddy Paul <81377e2a34d847c3d32426a860c9dd5a2dc367ef@intel.com>
Reviewed-by: Freddy Paul <81377e2a34d847c3d32426a860c9dd5a2dc367ef@intel.com>
Reviewed-by: Shawn N <5259333ce42e3ace6a73988cec7115ed9d3a661a@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,akappy7/ChromeOS_EC_LED_Diagnostics,akappy7/ChromeOS_EC_LED_Diagnostics,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,akappy7/ChromeOS_EC_LED_Diagnostics,coreboot/chrome-ec,akappy7/ChromeOS_EC_LED_Diagnostics,akappy7/ChromeOS_EC_LED_Diagnostics