soong-ui: Redirect mmm to mmma.

This is the first part of deprecating the mmm command. mmm will simply
be redirected to mmma by building the list of modules with their
dependencies.

Bug: b/135187558
Test: Ran mmm external/libusb:libusb.
Change-Id: I50cf0d6a07197556ab6130e612561c6d5a3fb31e