Add vintf_fragment modules as required dependencies

vint_fragment modules are automatically added as required dependencies
in Androidmk entries generation, but is not being added as Soong
required install dependencies. This change allows the vint_fragment
modules to be automatically installed, matching the behavior in make.

Test: unpack and diff soong and make generated vendor_ramdisk partitions
Bug: 322089980
Bug: 381888358
Change-Id: I697b32c9dacec7a35f9fca62bedae1d3e563568e