Building with the attached random configuration file runs into issues
in several different places; devm_gpio_request seems to be the common
item:

  LD      init/built-in.o
drivers/built-in.o: In function `bd6107_probe':
bd6107.c:(.text+0x12cba): undefined reference to `devm_gpio_request_one'
drivers/built-in.o: In function `da9055_regulator_probe':
da9055-regulator.c:(.text+0x2ffec): undefined reference to
`devm_gpio_request_one'
da9055-regulator.c:(.text+0x3007d): undefined reference to
`devm_gpio_request_one'
drivers/built-in.o: In function `s5m8767_pmic_probe':
s5m8767.c:(.text+0x348a1): undefined reference to `devm_gpio_request'
s5m8767.c:(.text+0x348bc): undefined reference to `devm_gpio_request'
s5m8767.c:(.text+0x348d7): undefined reference to `devm_gpio_request'
drivers/built-in.o: In function `wm831x_buckv_probe':
wm831x-dcdc.c:(.text+0x36996): undefined reference to `devm_gpio_request_one'
drivers/built-in.o: In function `stmpe_probe':
(.text+0xb23d1): undefined reference to `devm_gpio_request_one'
drivers/built-in.o: In function `arizona_irq_init':
(.text+0xb4176): undefined reference to `devm_gpio_request_one'
drivers/built-in.o: In function `wm831x_wdt_probe':
wm831x_wdt.c:(.text+0x1af951): undefined reference to `devm_gpio_request_one'
drivers/built-in.o: In function `mmc_gpio_request_cd':
(.text+0x21aaba): undefined reference to `devm_gpio_request_one'
drivers/built-in.o:extcon-arizona.c:(.text+0x25241d): more undefined
references to `devm_gpio_request_one' follow
make: *** [vmlinux] Error 1