java/openjdk8: Add CPE information

Approved by:	portmgr (blanket)

java/openjdk8/Makefile

@@ -22,7 +22,9 @@ LIB_DEPENDS=	libfontconfig.so:x11-fonts/fontconfig \
 RUN_DEPENDS=	javavm:java/javavmwrapper \
 		dejavu>0:x11-fonts/dejavu
 
-USES=		compiler:features gmake iconv pkgconfig
+USES=		compiler:features cpe gmake iconv pkgconfig
+
+CPE_VENDOR=	oracle
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	battleblow