[aarch64-port-dev ] 8u-aarch64: Backport 8221658: aarch64: add necessary predicate for ubfx patterns

[Yangfei (Felix)]

Hi,

Original Bug: https://bugs.openjdk.java.net/browse/JDK-8221658 
Original patch: http://hg.openjdk.java.net/jdk/jdk/rev/0fa2903fb272

This bug can still be reproduced with 8u aarch64 release build with test: 
    https://bugs.openjdk.java.net/secure/attachment/81950/fuzz-test.tar.bz2 

Webrev for 8u-aarch64: http://cr.openjdk.java.net/~fyang/8221658-8u/webrev.00/ 
Code changes to pattern ubfizL in the original patch is not necessary as it is not there in 8u aarch64.

Performed full jtreg test with 8u aarch64 release build.  OK to backport?

Thanks,
Felix