Increment Android versions to 5.0.1

Change-Id: I2880123f0d1215f2028e6d3bc3f88fee5714ae74
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 8cb8d26..36e4e98 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -41,7 +41,7 @@
   # which is the version that we reveal to the end user.
   # Update this value when the platform version changes (rather
   # than overriding it somewhere else).  Can be an arbitrary string.
-  PLATFORM_VERSION := 5.0
+  PLATFORM_VERSION := 5.0.1
 endif
 
 ifeq "" "$(PLATFORM_SDK_VERSION)"