power/supply: set force main fcc and icl to 800ma to make charge current close to 4A

 &&&%%%comment:set charge current close to 4A
 &&&%%%bug number:11217991
 &&&%%%product name:sm7225_r_fp4
 &&&%%%root cause:Specification
 &&&%%%Bug category:T2M
 &&&%%%Module_Impact:kernel
 &&&%%%Test_Suggestion:test charging
 &&&%%%Solution:set charge current close to 4A
 &&&%%%Test_Report:test is ok
 &&&%%%VAL Can Test:NO