Fix build on FreeBSD/powerpc64le

Author: pkubaj

Makefile.system

@@ -21,6 +21,8 @@ ifeq ($(ARCH), amd64)
 override ARCH=x86_64
 else ifeq ($(ARCH), powerpc64)
 override ARCH=power
+else ifeq ($(ARCH), powerpc64le)
+override ARCH=power
 else ifeq ($(ARCH), powerpc)
 override ARCH=power
 else ifeq ($(ARCH), i386)