charge_state_v2: Set charger input current in the task
charge_state_v2: Set charger input current in the task

When task creating, input_current will be set as condition.
But there is no more handling for this value. so it will remain
even if condition is changed.
This will put input current decision int the loop so that we can
proper input current as battery existence.

BUG=chrome-os-partner:47546
TEST=make buildall, command 'charger' with/without battery.
     and see it is changed dynamically
BRANCH=None

(cherry picked from commit d2ac89d58c34d7cc0a2a3fb591fcdcddbe2e9feb)
Change-Id: Ib72e20faf7c7f302a4e39d43b23176247e5176fa
Signed-off-by: Wonjoon Lee <b961a80bc33bbc19346c547d1234eeb868c7ae74@samsung.com>
Reviewed-on: https://chromium-review.googlesource.com/312950
Commit-Ready: Shawn N <5259333ce42e3ace6a73988cec7115ed9d3a661a@chromium.org>
Reviewed-by: Alec Berg <1a4429eeda29095a12e19a73405f80f5b7f37a63@chromium.org>

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