Use GO_LDFLAGS instead of LDFLAGS.
Use GO_LDFLAGS instead of LDFLAGS.

Yocto fills LDFLAGS with gcc specific arguments which Go doesn't like.

Signed-off-by: Kristian Amlie <505e66ae45028a0596c853559221f0b72c1cee21@mender.io>

bboozzoo/mender,bboozzoo/mender