[pm:s2idle-dell-test 9/12] gpiolib-acpi.c:(.text+0x2df0): multiple definition of `acpi_wakeup_event'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git s2idle-dell-test
head:   dd5f3b05c77a7e811a87c10c3e0caae54dde1c0e
commit: 8c4bd2136176072d31146635bfd98bb71e08a641 [9/12] ACPI / PM: Ignore spurious SCI wakeups from suspend-to-idle
config: x86_64-randconfig-x019-201723 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        git checkout 8c4bd2136176072d31146635bfd98bb71e08a641
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   drivers/gpio/gpiolib-acpi.o: In function `acpi_wakeup_event':

quoted

gpiolib-acpi.c:(.text+0x2df0): multiple definition of `acpi_wakeup_event'

   drivers/gpio/gpiolib.o:gpiolib.c:(.text+0x2080): first defined here
   drivers/gpio/gpio-pca953x.o: In function `acpi_wakeup_event':
   gpio-pca953x.c:(.text+0x2db0): multiple definition of `acpi_wakeup_event'
   drivers/gpio/gpiolib.o:gpiolib.c:(.text+0x2080): first defined here

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