The ninja-to-soong migration marked all libcamera shared libs as
soc_specific: true but omitted vendor_available: true from the static
libs they link against. This causes Soong to fail with "missing variant:
image:vendor" when the static libs are pulled in transitively by the
vendor APEX com.android.hardware.camera.libcamera.
Add vendor_available: true to the five affected cc_library_static modules.
