MdeModulePkg/EbcDxe: Make variable name follow rules

For variable name, it should contain lower case characters.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Dandan Bi <dandan.bi@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>

MdeModulePkg/Universal/EbcDxe/EbcDebugger/EdbCommon.h

@@ -90,7 +90,7 @@ typedef enum {
 
 typedef struct {
   CHAR8                      Name[EFI_DEBUGGER_SYMBOL_NAME_MAX];
-  UINTN                      RVA;
+  UINTN                      Rva;
   EFI_DEBUGGER_SYMBOL_TYPE   Type;
   CHAR8                      ObjName[EFI_DEBUGGER_SYMBOL_NAME_MAX];
   CHAR8                      *CodBuffer;