Revert "i9500: power: replace "JF3G" with "JA3G""

This reverts commit 02cc84af54bb0f9b909ef09af41718f8d8291328.
Revert "charger: use better pictures and power: replace "JF3G" with "JA3G""

This reverts commit 28fc58e2aaae08ab3e726aed51a868db730e728a.