Recognise mips64 n32/n64

These are supported in systemd now a days

Upstream-Status: Backport [https://github.com/systemd/systemd/commit/caf49b95b3a6efe9455078098c729d83b08e5206]
Signed-off-by: Khem Raj <raj.khem@gmail.com>

--- a/src/architecture.h
+++ b/src/architecture.h
@@ -127,13 +127,22 @@ int uname_architecture(void);
 #  define native_architecture() ARCHITECTURE_SPARC
 #  define LIB_ARCH_TUPLE "sparc-linux-gnu"
 #  define PROC_CPUINFO_MODEL "cpu"
-#elif defined(__mips64__)
+#elif defined(__mips64) && defined(__LP64__)
 #  if __BYTE_ORDER == __BIG_ENDIAN
 #    define native_architecture() ARCHITECTURE_MIPS64
-#    error "Missing LIB_ARCH_TUPLE for MIPS64"
+#    define LIB_ARCH_TUPLE "mips64-linux-gnuabi64"
 #  else
 #    define native_architecture() ARCHITECTURE_MIPS64_LE
-#    error "Missing LIB_ARCH_TUPLE for MIPS64_LE"
+#    define LIB_ARCH_TUPLE "mips64el-linux-gnuabi64"
+#  endif
+#  define PROC_CPUINFO_MODEL "cpu model"
+#elif defined(__mips64)
+#  if __BYTE_ORDER == __BIG_ENDIAN
+#    define native_architecture() ARCHITECTURE_MIPS64
+#    define LIB_ARCH_TUPLE "mips64-linux-gnuabin32"
+#  else
+#    define native_architecture() ARCHITECTURE_MIPS64_LE
+#    define LIB_ARCH_TUPLE "mips64el-linux-gnuabin32"
 #  endif
 #  define PROC_CPUINFO_MODEL "cpu model"
 #elif defined(__mips__)