linux-ramdump-parser-v2: Add tracing for stack unwinding

The arm32 version of stack unwinding was missing a function. Add it
back.

Change-Id: I46f769938601867fd7d331e01b200071630696af

linux-ramdump-parser-v2/ramdump.py

@@ -121,7 +121,7 @@ class RamDump():
             frame.pc = self.ramdump.read_word(fp + 8)
             return 0
 
-        def unwind_frame_generic(self, frame):
+        def unwind_frame_generic(self, frame, trace=False):
             high = 0
             fp = frame.fp