gralloc4: Support RAW plane type

RAW12 and RAW16 buffers will have a PlaneLayoutComponentType of
type RAW. Update getPlaneLayoutComponentTypeName to include the
new type.

Test: Gralloc4_test
Bug: 149869426

Change-Id: Ib10b7d2c4dc3e7a68fc235391829ae7d6c6b2ea8
diff --git a/libs/gralloc/types/Gralloc4.cpp b/libs/gralloc/types/Gralloc4.cpp
index 603e7e5..53c68b7 100644
--- a/libs/gralloc/types/Gralloc4.cpp
+++ b/libs/gralloc/types/Gralloc4.cpp
@@ -1317,6 +1317,8 @@
             return "G";
         case PlaneLayoutComponentType::B:
             return "B";
+        case PlaneLayoutComponentType::RAW:
+            return "RAW";
         case PlaneLayoutComponentType::A:
             return "A";
     }