PcAtChipsetPkg: Apply uncrustify changes

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

Apply uncrustify changes to .c/.h files in the PcAtChipsetPkg 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: Ray Ni <ray.ni@intel.com>

PcAtChipsetPkg/Include/Library/IoApicLib.h

@@ -8,6 +8,7 @@
   SPDX-License-Identifier: BSD-2-Clause-Patent
 
 **/
+
 #ifndef __IO_APIC_LIB_H__
 #define __IO_APIC_LIB_H__
 
@@ -96,4 +97,5 @@ IoApicConfigureInterrupt (
   IN BOOLEAN  LevelTriggered,
   IN BOOLEAN  AssertionLevel
   );
+
 #endif