generate_test_code.py: simplify regex expression

"\w" already matches "[a-zA-Z0-9_]" so CONDITION_VALUE_REGEX
can be simplified as proposed in this commit.

Signed-off-by: Valerio Setti <vsetti@baylibre.com>

scripts/generate_test_code.py

@@ -206,7 +206,7 @@
 #       - math operators, i.e "+", "-", "*", "/"
 #       - bitwise operators, i.e. "^", "|", "&", "~", "<<", ">>"
 #       - parentheses, i.e. "()"
-CONDITION_VALUE_REGEX = r'[\d|\w|\(][\s_\(\)0-9a-zA-Z\+\-\*\/\^\|\&\~\<\>]*'
+CONDITION_VALUE_REGEX = r'[\w|\(][\s\w\(\)\+\-\*\/\^\|\&\~\<\>]*'
 CONDITION_REGEX = r'({})(?:\s*({})\s*({}))?$'.format(C_IDENTIFIER_REGEX,
                                                      CONDITION_OPERATOR_REGEX,
                                                      CONDITION_VALUE_REGEX)