binman: Add DecompressData function to entry class

Add a DecompressData function to entry class to allow override in child
classes and to centralize the compress and decompress in a single class.

Signed-off-by: Stefan Herbrechtsmeier <stefan.herbrechtsmeier@weidmueller.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

tools/binman/entry.py

@@ -1120,6 +1120,21 @@ features to produce new behaviours.
         data = comp_util.compress(indata, self.compress)
         return data
 
+    def DecompressData(self, indata):
+        """Decompress data according to the entry's compression method
+
+        Args:
+            indata: Data to decompress
+
+        Returns:
+            Decompressed data
+        """
+        data = comp_util.decompress(indata, self.compress)
+        if self.compress != 'none':
+            self.uncomp_size = len(data)
+        self.uncomp_data = data
+        return data
+
     @classmethod
     def UseExpanded(cls, node, etype, new_etype):
         """Check whether to use an expanded entry type