flex layout: grid col/row span

radio/src/thirdparty/libopenui/src/flexlayout.h

@@ -63,5 +63,9 @@ class FlexGridLayout
 
   void nextColumn() { col_pos++; }
   void nextRow() { row_pos++; }
+
   void resetPos() { col_pos = 0; row_pos = 0; }
+
+  void setColSpan(uint8_t span) { col_span = span; }
+  void setRowSpan(uint8_t span) { row_span = span; }
 };