randconfig build error with next-20150410, in sound/soc/codecs/rt5645.c

Building with the attached random configuration file, sound/built-in.o: In function `rt5645_i2c_probe': rt5645.c:(.text+0x8f63f): undefined reference to `devm_regmap_init_i2c' sound/built-in.o: In function `rt5645_i2c_driver_exit': rt5645.c:(.exit.text+0x327): undefined reference to

randconfig build error with next-20150410, in sound/soc/codecs/rt5645.c

Building with the attached random configuration file, sound/built-in.o: In function `rt5645_i2c_probe': rt5645.c:(.text+0x8f63f): undefined reference to `devm_regmap_init_i2c' sound/built-in.o: In function `rt5645_i2c_driver_exit': rt5645.c:(.exit.text+0x327): undefined reference to