Sandybridge-M: Unable to compile board on 4.11 but works in 4.10

[Jose Trujillo]

Happy holidays to all:

My project is unable to compile/build on 4.11/master but do well with 4.10.
It shows the following error:

/home/fw_dev/Program_Files/coreboot/util/crossgcc/xgcc/bin/i386-elf-ld.bfd: build/bootblock/southbridge/intel/bd82x6x/early_pch.o: in function `early_pch_init':
/home/fw_dev/Program_Files/coreboot/src/southbridge/intel/bd82x6x/early_pch.c:330: undefined reference to `mainboard_gpio_map'
make: *** [src/arch/x86/Makefile.inc:125: build/cbfs/fallback/bootblock.debug] Error 1

Looks like `mainboard_gpio_map' is already defined on: #include <southbridge/intel/common/gpio.h>
What can I do to make it build successfully?
The build log and project are attached here.

I tried to upload the project to gerrit but for some reason failed (maybe needs some cleaning).
Thank you,
Jose Trujillo.