Add doxygen style comments for functions in DxeMain.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5189 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Core/Dxe/Misc/Stall.c

@@ -20,29 +20,22 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <DxeMain.h>
 
 
+
+/**
+  Introduces a fine-grained stall.
+
+  @param  Microseconds           The number of microseconds to stall execution.
+
+  @retval EFI_SUCCESS            Execution was stalled for at least the requested 
+                                 amount of microseconds. 
+  @retval EFI_NOT_AVAILABLE_YET  gMetronome is not available yet
+
+**/
 EFI_STATUS
 EFIAPI
 CoreStall (
   IN UINTN            Microseconds
   )
-/*++
-
-Routine Description:
-
-  Introduces a fine-grained stall.
-
-Arguments:
-
-  Microseconds      The number of microseconds to stall execution
-
-Returns:
-
-  EFI_SUCCESS            - Execution was stalled for at least the requested amount
-                           of microseconds.
-
-  EFI_NOT_AVAILABLE_YET  - gMetronome is not available yet
-
---*/
 {
   UINT32  Counter;
   UINT32  Remainder;