gpio: Import FP4 board ID driver

[1 of 1][ALM:10872981] [FP4]:board id bring up
 &&&%%%comment:[FP4]:board id bring up
 &&&%%%bug number:10872981
 &&&%%%product name:sm7225_r_fp4
 &&&%%%root cause:Coding
 &&&%%%Bug category:T2M
 &&&%%%Module_Impact:kernel
 &&&%%%Test_Suggestion:reset
 &&&%%%Solution:add drivers
 &&&%%%Test_Report:local test is ok
 &&&%%%VAL Can Test:NO

Change-Id: Iff02a8a0510f0c52ad5fb3f7100a4a6ee5ad0056