[PATCH 3/6] mfd: axp20x: Add support for RSB based AXP223 PMIC

Hi Chen-Yu,

[auto build test ERROR on next-20151013 -- if it's inappropriate base, please suggest rules for selecting the more suitable base]

url:    https://github.com/0day-ci/linux/commits/Chen-Yu-Tsai/mfd-axp20x-Add-support-for-RSB-based-AXP223/20151015-004334
config: i386-randconfig-s1-201541 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All error/warnings (new ones prefixed by >>):

warning: (MFD_AXP20X) selects MFD_AXP20X_RSB which has unmet direct dependencies (HAS_IOMEM && SUNXI_RSB)
   drivers/built-in.o: In function `axp20x_sunxi_rsb_probe':

quoted

axp20x-rsb.c:(.text+0xe00d7): undefined reference to `__devm_regmap_init_sunxi_rsb'

   drivers/built-in.o: In function `axp20x_sunxi_rsb_driver_init':

quoted

axp20x-rsb.c:(.init.text+0x81ce): undefined reference to `sunxi_rsb_driver_register'

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
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