mainboard,ASL: Trivial - drop trailing blank lines at EOF

Change-Id: Ib531a54db7df6b49a6218f689dcaab712e9dfb01
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/6292
Tested-by: build bot (Jenkins)
Reviewed-by: Idwer Vollering <vidwer@gmail.com>

src/mainboard/packardbell/ms2290/acpi/ac.asl

@@ -47,4 +47,3 @@ Method(_Q51, 0, NotSerialized)
 {
 	Notify (AC, 0x80)
 }
-

src/mainboard/packardbell/ms2290/acpi/platform.asl

@@ -144,4 +144,3 @@ Scope(\_SB)
 		}
 	}
 }
-