8295811: serviceability/sa/TestObjectAlignment.java fails on x86_32

Reviewed-by: cjplummer

Author: DamonFool

test/hotspot/jtreg/serviceability/sa/TestObjectAlignment.java

@@ -38,7 +38,7 @@
 /**
  * @test
  * @library /test/lib
- * @requires vm.hasSA
+ * @requires vm.hasSA & vm.bits == "64"
  * @modules jdk.hotspot.agent/sun.jvm.hotspot
  *          jdk.hotspot.agent/sun.jvm.hotspot.runtime
  * @run driver TestObjectAlignment