BaseTools: strip trailing whitespace

Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>

BaseTools/Source/Python/GenFds/GenFdsGlobalVariable.py

@@ -160,7 +160,7 @@ class GenFdsGlobalVariable:
         "OUTPUT_DIR":os.path.join(BuildDir, "OUTPUT"),
         "DEBUG_DIR":os.path.join(BuildDir, "DEBUG")
         }
-        
+
         BuildRules = {}
         for Type in BuildRuleDatabase.FileTypeList:
             #first try getting build rule by BuildRuleFamily