Fix shared library install dependencies outside of /system

For properly picking the shared library install dependencies, HOST_OUT
and HOST_CROSS_OUT are necessary so that we don't add a dependency
between Linux and Windows. But for target modules, we must use
TARGET_OUT_ROOT instead of TARGET_OUT, or modules in /data and /vendor
won't have proper install dependencies.

Bug: 31462199
Test: m bionic-unit-tests; manual diff of generated ninja file
Change-Id: I828fa2664613296cc6c431813f5657abffdd2b8f