OvmfPkg: remove last instances of EFI_D_

Change debug print levels to modern DEBUG_ format.

Signed-off-by: Leif Lindholm <quic_llindhol@quicinc.com>

OvmfPkg/Library/HardwareInfoLib/HardwareInfoDxe.c

@@ -89,7 +89,7 @@ FreeResources:
 
 FailedAllocate:
   DEBUG ((
-    EFI_D_ERROR,
+    DEBUG_ERROR,
     "%a: Failed to allocate memory for hardware info\n",
     __func__
     ));

OvmfPkg/LoongArchVirt/Library/LsRealTimeClockLib/LsRealTimeClockLib.c

@@ -49,7 +49,7 @@ InitRtc (
       MmioWrite32 (mRtcBase + RTC_CTRL_REG, Val);
       mInitialized = TRUE;
     } else {
-      DebugPrint (EFI_D_INFO, "RTC register address not found!\n");
+      DebugPrint (DEBUG_INFO, "RTC register address not found!\n");
       ASSERT (FALSE);
     }
   }