[FP5-101] Battery Charging Speed Options

* Root Cause
Customer new requirement

* Solution
Add chgmode_fcc node and related logical codes to support the function

* Test Steps
1 Set the node value through adb
2 Check the current to match the set

* Test Result
Test OK, need upper layer use the node

Change-Id: I8402c545a3001aa8f3944302fc382b5a4fb9ce1f