[cryptodev:master 79/79] (.text+0x330de0): multiple definition of `ecdh_shared_secret'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git master
head:   3c4b23901a0c766879dff680cd6bdab47bcdbbd2
commit: 3c4b23901a0c766879dff680cd6bdab47bcdbbd2 [79/79] crypto: ecdh - Add ECDH software support
config: i386-allyesconfig (attached as .config)
compiler: gcc-6 (Debian 6.1.1-1) 6.1.1 20160430
reproduce:
        git checkout 3c4b23901a0c766879dff680cd6bdab47bcdbbd2
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   net/built-in.o: In function `ecdh_shared_secret':

quoted

(.text+0x330de0): multiple definition of `ecdh_shared_secret'

   crypto/built-in.o:(.text+0xb1b0): first defined here

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