SecurityPkg/SecureBootConfigDxe: Fix coding style issue

The change doesn't impact the functionality.

Cc: Bi Dandan <dandan.bi@intel.com>
Cc: Zhang Chao <chao.b.zhang@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: chenc2 <chen.a.chen@intel.com>
Reviewed-by: Bi Dandan <dandan.bi@intel.com>
Reviewed-by: Chao Zhang <chao.b.zhang@intel.com>

SecurityPkg/VariableAuthenticated/SecureBootConfigDxe/SecureBootConfigImpl.h

@@ -152,16 +152,16 @@ typedef struct {
 } HII_VENDOR_DEVICE_PATH;
 
 typedef enum {
-  VARIABLE_DB,
-  VARIABLE_DBX,
-  VARIABLE_DBT,
-  VARIABLE_MAX
+  Variable_DB,
+  Variable_DBX,
+  Variable_DBT,
+  Variable_MAX
 } CURRENT_VARIABLE_NAME;
 
 typedef enum {
-  DELETE_SIGNATURE_LIST_ALL,
-  DELETE_SIGNATURE_LIST_ONE,
-  DELETE_SIGNATURE_DATA
+  Delete_Signature_List_All,
+  Delete_Signature_List_One,
+  Delete_Signature_Data
 }SIGNATURE_DELETE_TYPE;
 
 typedef struct {