[LEDE-DEV] [PATCH] dropbear: Link ssh and scp command to /bin instead of /usr/bin

[Hannu Nyman]

This patch has been applied as commit f7528ed0a8 and I think that it has 
broken dropbear compilation (and naturally also phase1 buildbot)

The files are installed into /bin but that directory has not been created 
with INSTALL_DIR first. That was forgotten from the patch...

My own build (after dirclean) produced this:

ln -sf ../sbin/dropbear 
/OwrtLEDE/r7800/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/dropbear-2017.75/.pkgdir/dropbear/bin/scp
ln: failed to create symbolic link 
'/OwrtLEDE/r7800/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/dropbear-2017.75/.pkgdir/dropbear/bin/scp': 
No such file or directory
Makefile:147: recipe for target 
'/OwrtLEDE/r7800/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/dropbear-2017.75/.pkgdir/dropbear.installed' 
failed

from buildbot:
ln -sf ../sbin/dropbear 
/home/buildbot/slave-lede-local/octeon_generic/build/build_dir/target-mips64_octeon_64_musl/dropbear-2017.75/.pkgdir/dropbear/bin/scp
ln: failed to create symbolic link 
`/home/buildbot/slave-lede-local/octeon_generic/build/build_dir/target-mips64_octeon_64_musl/dropbear-2017.75/.pkgdir/dropbear/bin/scp': 
No such file or directory
make[2]: *** 
[/home/buildbot/slave-lede-local/octeon_generic/build/build_dir/target-mips64_octeon_64_musl/dropbear-2017.75/.pkgdir/dropbear.installed] 
Error 1