support tag in memorydata layer (#5061)

Signed-off-by: daquexian <daquexian566@gmail.com>

src/layer/memorydata.cpp

@@ -28,6 +28,7 @@ int MemoryData::load_param(const ParamDict& pd)
     h = pd.get(1, 0);
     d = pd.get(11, 0);
     c = pd.get(2, 0);
+    load_type = pd.get(21, 1);
 
     return 0;
 }
@@ -36,19 +37,19 @@ int MemoryData::load_model(const ModelBin& mb)
 {
     if (d != 0)
     {
-        data = mb.load(w, h, d, c, 1);
+        data = mb.load(w, h, d, c, load_type);
     }
     else if (c != 0)
     {
-        data = mb.load(w, h, c, 1);
+        data = mb.load(w, h, c, load_type);
     }
     else if (h != 0)
     {
-        data = mb.load(w, h, 1);
+        data = mb.load(w, h, load_type);
     }
     else if (w != 0)
     {
-        data = mb.load(w, 1);
+        data = mb.load(w, load_type);
     }
     else // 0 0 0
     {

src/layer/memorydata.h

@@ -35,6 +35,7 @@ class MemoryData : public Layer
     int h;
     int d;
     int c;
+    int load_type;
 
     Mat data;
 };