fix: wrong dependency from ETC to libc++.so

There are prebuilt modules which are meant to be just copied.
e.g. ETC,SCRIPT,DATA files

The problem for current prebuilt_internal.mk is that those modules are
handled by cc_prebuilt_internal.mk, which adds libc++ as dependency,
which is simply wrong with copy-only prebuilt modules.

As a fix, misc_prebuilt_internal.mk is introduced to handle
ETC,SCRIPT,DATA prebuilt modules and doesn't do additional processing.

Bug: 132925121
Test: m nothing && check build-<TARGET>.ninja if there is no dependency
to libc++ from ETC modules such as /system/etc/sepolicy_test

Change-Id: I846f8e1f3741ca71c86f5420cfaafa7419ebf3f6