BaseTools: Ecc/exception: Added _ModuleEntryPoint into exception list

BaseTools: Ecc/exception: Added _ModuleEntryPoint into exception list

Function '_ModuleEntryPoint' is a pre-defined interface for various EFI
module types and should not be caught violating EFI coding style. This
change added '_ModuleEntryPoint' into exception list to fix EFI coding
style error 8006 during CI build.

Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Yuwei Chen <yuwei.chen@intel.com>
Signed-off-by: Kun Qin <kun.q@outlook.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Reviewed-by: Bob Feng <bob.c.feng@intel.com>