CHERRY_PICK: MinPlatformPkg/TestPointCheckLib: Make OutTable parameter optional (#34)

Makes the OutTable parameter in DumpAcpiRsdt() and DumpAcpiXsdt()
optional since the pointer passed can be NULL if the Signature
pointer is also NULL.

Can fix a potential failure in TestPointCheckAcpi().

Cc: Chasel Chiu <chasel.chiu@intel.com>
Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Eric Dong <eric.dong@intel.com>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Nate DeSimone <nathaniel.l.desimone@intel.com>
(cherry picked from commit 89fb75a)

MinPlatformPkg/Test/Library/TestPointCheckLib/DxeCheckAcpi.c

@@ -592,7 +592,7 @@ EFI_STATUS
 DumpAcpiRsdt (
   IN EFI_ACPI_DESCRIPTION_HEADER  *Rsdt,
   IN UINT32                       *Signature, OPTIONAL
-  OUT VOID                        **OutTable,
+  OUT VOID                        **OutTable, OPTIONAL // MS_CHANGE_2154918
   IN BOOLEAN                      DumpPrint,
   IN BOOLEAN                      CheckResource
   )
@@ -610,7 +610,9 @@ DumpAcpiRsdt (
 
   if (OutTable != NULL) {
     *OutTable = NULL;
-  } else {
+  } else if ((OutTable == NULL) && // MS_CHANGE_2154918
+             (Signature != NULL))
+  {
     return EFI_INVALID_PARAMETER;
   }
 
@@ -646,7 +648,7 @@ EFI_STATUS
 DumpAcpiXsdt (
   IN EFI_ACPI_DESCRIPTION_HEADER  *Xsdt,
   IN UINT32                       *Signature, OPTIONAL
-  OUT VOID                        **OutTable,
+  OUT VOID                        **OutTable, OPTIONAL // MS_CHANGE_2154918
   IN BOOLEAN                      DumpPrint,
   IN BOOLEAN                      CheckResource
   )
@@ -665,7 +667,9 @@ DumpAcpiXsdt (
 
   if (OutTable != NULL) {
     *OutTable = NULL;
-  } else {
+  } else if ((OutTable == NULL) && // MS_CHANGE_2154918
+             (Signature != NULL))
+  {
     return EFI_INVALID_PARAMETER;
   }