increase no of chars returned by gdb.

increase no of chars returned by gdb to 256

Change-Id: I7d5a3da6c3744fbcfc4d10b68413c4a237e27692
Signed-off-by: Shivendra Pratap <spratap@codeaurora.org>

linux-ramdump-parser-v2/gdbmi.py

@@ -294,6 +294,7 @@ class GdbMI(object):
 
     def get_value_of_string(self, symbol):
         """Returns the value of a symbol (as a string)"""
+	self._run("set print elements 256")
         cmd = 'print /s {0}'.format(symbol)
         result = self._run(cmd)
         if len(result.lines) == 0: