OvmfPkg/PlatformBootManagerLib: log informative message at DEBUG_INFO…

… lvl

"Boot Mode:%x" is an informative message, not an error report. Set its
debug mask to DEBUG_INFO.

Cc: Jordan Justen <jordan.l.justen@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Laszlo Ersek <lersek@redhat.com>

OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c

@@ -1440,7 +1440,7 @@ Routine Description:
   // Get current Boot Mode
   //
   BootMode = GetBootModeHob ();
-  DEBUG ((EFI_D_ERROR, "Boot Mode:%x\n", BootMode));
+  DEBUG ((DEBUG_INFO, "Boot Mode:%x\n", BootMode));
 
   //
   // Go the different platform policy with different boot mode