Android: fix libz dependency for host targets

Android: fix libz dependency for host targets

Commit 6facb0c08fa1 ("android: fix libz dynamic library dependencies")
added libz as a dependency, but this breaks host targets as the host
dependency is libz-host. As no host lib needs libz, just remove the
dependency for them.

Fixes: 6facb0c08fa1 "android: fix libz dynamic library dependencies"
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>