BaseTools: Eot - fix variable names

BaseTools: Eot - fix variable names

1) currently a couple classes use m instead of self (including some mixed
functions that should have previously failed).
2) deleted some blank lines.

Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jaben Carsey <jaben.carsey@intel.com>
Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>