Rename T to Tiramisu

PLATFORM_VERSION_CODENAME is being updated from T to Tiramisu.

Bug: 186121492
Bug: 194055070
Test: m checkbuild
Merged-In: I39a82c8ac3fd0b43bad06ec47b85aaeda6ef5cb4
Change-Id: I39a82c8ac3fd0b43bad06ec47b85aaeda6ef5cb4
(cherry picked from commit a45d0c890e27c45f7c71ab6b1455a743ce8afba8)
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 8e6c306..0c2fadd 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -94,7 +94,7 @@
 # These are the current development codenames, if the build is not a final
 # release build.  If this is a final release build, it is simply "REL".
 PLATFORM_VERSION_CODENAME.SP1A := S
-PLATFORM_VERSION_CODENAME.TP1A := T
+PLATFORM_VERSION_CODENAME.TP1A := Tiramisu
 
 ifndef PLATFORM_VERSION_CODENAME
   PLATFORM_VERSION_CODENAME := $(PLATFORM_VERSION_CODENAME.$(TARGET_PLATFORM_VERSION))