Support genrules as CrtBegin and CrtEnd in rust

Musl will use a genrule output as a linker script in CrtBegin,
support genrules as Crt* dependencies.

This is equivalent to Ie384089d26459797d0b4b5fef84846507fc508ad
in cc.

Bug: 216192129
Test: m USE_HOST_MUSL=true host-native
Change-Id: Ibc08fdcff7a6bca2a1ec05b781ce929080e211bd

rust/rust.go

@@ -1224,6 +1224,13 @@ func (mod *Module) depsToPaths(ctx android.ModuleContext) PathDeps {
 				lib.exportLinkDirs(linkPath)
 				lib.exportLinkObjects(linkObject.String())
 			}
+		} else {
+			switch {
+			case depTag == cc.CrtBeginDepTag:
+				depPaths.CrtBegin = append(depPaths.CrtBegin, android.OutputFileForModule(ctx, dep, ""))
+			case depTag == cc.CrtEndDepTag:
+				depPaths.CrtEnd = append(depPaths.CrtEnd, android.OutputFileForModule(ctx, dep, ""))
+			}
 		}
 
 		if srcDep, ok := dep.(android.SourceFileProducer); ok {