Add cgemm and zgemm unroll factors for core2

Author: martin-frbg

cmake/prebuild.cmake

@@ -124,6 +124,10 @@ if (DEFINED CORE AND CMAKE_CROSSCOMPILING AND NOT (${HOST_OS} STREQUAL "WINDOWSS
       set(SGEMM_UNROLL_N 4)
       set(DGEMM_UNROLL_M 4)
       set(DGEMM_UNROLL_N 4)
+      set(CGEMM_DEFAULT_UNROLL_M 4)
+      set(CGEMM_DEFAULT_UNROLL_N 2)
+      set(ZGEMM_DEFAULT_UNROLL_M 2)
+      set(ZGEMM_DEFAULT_UNROLL_N 2)      
   elseif ("${TCORE}" STREQUAL "ARMV7")
     file(APPEND ${TARGET_CONF_TEMP}
       "#define L1_DATA_SIZE\t65536\n"