Provide a default GEMM_DIVIDE_LIMIT and add it to DYNAMIC_ARCH

Author: martin-frbg

common_param.h

@@ -47,6 +47,7 @@
 typedef struct {
   int dtb_entries;
   int switch_ratio;
+  int divide_limit;
   int offsetA, offsetB, align;
 #if BUILD_HFLOAT16 == 1
 int shgemm_p, shgemm_q, shgemm_r;

param.h

@@ -4260,6 +4260,10 @@ Until then, just keep it different than DGEMM_DEFAULT_UNROLL_N to keep copy rout
 #define SWITCH_RATIO 2
 #endif
 
+#ifndef GEMM_DIVIDE_LIMIT
+#define GEMM_DIVIDE_LIMIT 0
+#endif
+
 #ifndef QGEMM_DEFAULT_UNROLL_M
 #define QGEMM_DEFAULT_UNROLL_M 2
 #endif