[nomadik:gemini-dir-685-rtl8366rb 2/7] ERROR: "of_irq_count" [net/dsa/dsa_core.ko] undefined!

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-nomadik.git gemini-dir-685-rtl8366rb
head:   7089cc0dd27d82e2ed9adaded66ffd8973017dd0
commit: 8f6b1418ccd0f05ca0556a5bec68d05a4b638d7d [2/7] RFC: net/dsa: Allow DSA PHYs to define link IRQs
config: i386-allmodconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        git checkout 8f6b1418ccd0f05ca0556a5bec68d05a4b638d7d
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

>> ERROR: "of_irq_count" [net/dsa/dsa_core.ko] undefined!
   make[2]: *** [__modpost] Error 1
   make[2]: Target '_modpost' not remade because of errors.
   make[1]: *** [modules] Error 2
   make[1]: Target '_all' not remade because of errors.

---
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