devel/google-perftools: enable libunwind on powerpc

devel/google-perftools/Makefile

 PORTNAME=	google-perftools
 DISTVERSIONPREFIX=	gperftools-
 DISTVERSION=	2.10
-PORTREVISION=	2
+PORTREVISION=	3
 CATEGORIES=	devel
 MASTER_SITES=	https://github.com/gperftools/gperftools/releases/download/gperftools-${PORTVERSION}/
 DISTNAME=	gperftools-${PORTVERSION}
@@ -72,7 +72,7 @@ CONFIGURE_ARGS+=--enable-frame-pointers
 .endif
 
 # keep in sync with all platforms where libunwind is available
-.if ${ARCH} == aarch64 || ${ARCH} == amd64 || ${ARCH} == armv6 || ${ARCH} == armv7 || ${ARCH} == i386 || ${ARCH} == powerpc64 || ${ARCH} == powerpc64le
+.if ${ARCH} == aarch64 || ${ARCH} == amd64 || ${ARCH} == armv6 || ${ARCH} == armv7 || ${ARCH} == i386 || ${ARCH} == powerpc || ${ARCH} == powerpc64 || ${ARCH} == powerpc64le
 LIB_DEPENDS+=	libunwind.so:devel/libunwind
 LIBS+=		-lunwind
 .endif