benchmarks/lzbench: try to unbreak the port's build against newer Clang

As of September 2023 (llvmorg-18.1.0-rc1) /usr/include/c++/v1/__config
no longer includes <sys/endian.h>, because both Clang and GCC always
define __BYTE_ORDER__ macro.  This had accidentally revealed a problem
in Kanzi data compressor which was including <machine/endian.h> to no
avail.  Replace it with <sys/endian.h> to obtain bswap??() definitions.

Reported by:	pkg-fallout
PR:		285285
LLVM commit:	https://github.com/llvm/llvm-project/commit/0a97720

benchmarks/lzbench/Makefile

@@ -22,6 +22,8 @@ post-patch:
 		${WRKSRC}/_lzbench/lzbench.h
 	@${REINPLACE_CMD} -e 's,shell echo|$$(CC),& 2>/dev/null,' \
 		${WRKSRC}/Makefile
+	@${REINPLACE_CMD} -e '/^#if defined(__FreeBSD__)/,+1s,machine,sys,' \
+		${WRKSRC}/kanzi-cpp/src/Memory.hpp
 	@${REINPLACE_CMD} -e '/pithy_Load64/s,vld1_u64(,&(uint64_t *),' \
 		${WRKSRC}/pithy/pithy.cpp
 	@${REINPLACE_CMD} -e '/^#if/s,defined(__aarch64__),& ||\