Specialize oc-dev into OPR1

Only allow building OPR1 in oc-dev.

Bug: 36891159
Change-Id: Ib778ad5232a8e33e312d467f6f6970a8027c81c1
Merged-In: I546d1c25a2b1d948a0e7da796f59e734a98635da
Test: treehugger
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index b7c93f0..9340e54 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -40,7 +40,7 @@
 
 DEFAULT_PLATFORM_VERSION := OPR1
 MIN_PLATFORM_VERSION := OPR1
-MAX_PLATFORM_VERSION := PPR1
+MAX_PLATFORM_VERSION := OPR1
 
 ALLOWED_VERSIONS := $(call allowed-platform-versions,\
   $(MIN_PLATFORM_VERSION),\
@@ -74,12 +74,10 @@
 # please add that PLATFORM_VERSION to the following text file:
 # cts/tests/tests/os/assets/platform_versions.txt
 PLATFORM_VERSION.OPR1 := O
-PLATFORM_VERSION.PPR1 := P
 
 # This is the current development code-name, if the build is not a final
 # release build.  If this is a final release build, it is simply "REL".
 PLATFORM_VERSION_CODENAME.OPR1 := O
-PLATFORM_VERSION_CODENAME.PPR1 := P
 
 ifndef PLATFORM_VERSION
   PLATFORM_VERSION := $(PLATFORM_VERSION.$(TARGET_PLATFORM_VERSION))