[11u] RFR: 8240353: AArch64: missing support for -XX:+ExtendedDTraceProbes in C1

[Guoge(JVM)]

Hi,

I would like to request a review for backport of JDK-8240353.

Original bug: https://bugs.openjdk.java.net/browse/JDK-8240353
webrev for 11u: http://cr.openjdk.java.net/~gguo/8240353-11u/webrev.00/

The fix is trivial and clean, performed full jtreg test with aarch64 release/fastdebug build.

Thanks,
Guo Ge