Use Tiramisu instead of T in supported_build_releases

Make this consistent with how code names are used in the rest of Soong.

Bug: 204763318
Test: m nothing
Change-Id: I1f2f40310df9d619db6aaaad3ed7339bb5e79194
diff --git a/sdk/build_release.go b/sdk/build_release.go
index 2bcdc6f..4c2277e 100644
--- a/sdk/build_release.go
+++ b/sdk/build_release.go
@@ -85,7 +85,7 @@
 
 	// Add the build releases from oldest to newest.
 	buildReleaseS = initBuildRelease("S")
-	buildReleaseT = initBuildRelease("T")
+	buildReleaseT = initBuildRelease("Tiramisu")
 )
 
 // initBuildRelease creates a new build release with the specified name.