site: add endianness information for libmemcached

(From OE-Core rev: 2587a33134fde80dd1367629d9def45ac70256ee)

Signed-off-by: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/site/endian-big

@@ -3,3 +3,6 @@ ac_cv_c_bigendian=${ac_cv_c_bigendian=yes}
 
 # libnet
 ac_cv_libnet_endianess=${ac_cv_libnet_endianess=big}
+
+# libmemcached
+ac_cv_c_endian=big

meta/site/endian-little

@@ -4,3 +4,5 @@ ac_cv_c_bigendian=${ac_cv_c_bigendian=no}
 # libnet
 ac_cv_libnet_endianess=${ac_cv_libnet_endianess=lil}
 
+# libmemcached
+ac_cv_c_endian=little