Add VERSION_CODES.P

Bug: 64982450
Test: Build and boot
Change-Id: I0a90033239081c583b10021cbc06d032e206beb4
diff --git a/tools/aapt2/SdkConstants.h b/tools/aapt2/SdkConstants.h
index 5c32ed4..13584c0 100644
--- a/tools/aapt2/SdkConstants.h
+++ b/tools/aapt2/SdkConstants.h
@@ -53,6 +53,7 @@
   SDK_NOUGAT_MR1 = 25,
   SDK_O = 26,
   SDK_O_MR1 = 27,
+  SDK_P = 10000, // STOPSHIP Replace with the real version.
 };
 
 ApiVersion FindAttributeSdkLevel(const ResourceId& id);