profiling: Move address conversion to Contiki

The address in the AVR is given in words not in bytes. Previously the
script handled conversion, but doing it in Contiki should be cleaner.

profile-neat.py

@@ -113,10 +113,6 @@ def ignore_site(site, onlyfile=False, onlyname=False):
 
 
 def lookup_symbol(symbol, funcptr=False):
-	# AVR stores the address in words, correct that
-	if options.prefix == "avr":
-		symbol = 2*symbol
-
 	if symbol in func_table:
 		return func_table[symbol]