Added code checker script

This script just calls code checkers pep8 and pylint.

Signed-off-by: Claudius Heine <ch@denx.de>

scripts/checkcode.sh

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+ERROR=0
+
+echo "Checking with pep8"
+pep8 $1/*.py $1/*/*.py || ERROR=$(expr $ERROR + 1)
+
+echo "Checking with pylint"
+pylint $1/*.py $1/*/*.py || ERROR=$(expr $ERROR + 2)
+
+exit $ERROR