Add VERSION_CODES.P

Bug: 64982450
Test: Build and boot
Change-Id: I0a90033239081c583b10021cbc06d032e206beb4
diff --git a/core/java/android/os/Build.java b/core/java/android/os/Build.java
index 0627998..935f5f3 100644
--- a/core/java/android/os/Build.java
+++ b/core/java/android/os/Build.java
@@ -774,6 +774,11 @@
          * O MR1.
          */
         public static final int O_MR1 = 27;
+
+        /**
+         * P.
+         */
+        public static final int P = CUR_DEVELOPMENT; // STOPSHIP Replace with the real version.
     }
 
     /** The type of build, like "user" or "eng". */