MdePkg: Apply uncrustify changes

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737

Apply uncrustify changes to .c/.h files in the MdePkg package

Cc: Andrew Fish <afish@apple.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>

MdePkg/Library/SmmServicesTableLib/SmmServicesTableLib.c

@@ -11,7 +11,7 @@
 #include <Library/SmmServicesTableLib.h>
 #include <Library/DebugLib.h>
 
-EFI_SMM_SYSTEM_TABLE2   *gSmst             = NULL;
+EFI_SMM_SYSTEM_TABLE2  *gSmst = NULL;
 
 /**
   The constructor function caches the pointer of SMM Services Table.