To allow genrules with more than one tool, rename the tool property to
tools and make it an array, replace $tool with $(location <label>),
and use $() for other variables for consistency.
Bug: 31948427
Test: compare build.ninja
Change-Id: I3d714f70a2af0dc60faeee10e09b6ed166601f1d
(cherry picked from commit b785f5b82e)
+ All remaining solicited requests to radio covered.
Test: No test for the interface.
Bug: 32020264
Change-Id: I1ee21c01ec9676919a0e88dadc3be2e21a3459a5