Enable JFR on Aarch64 linux

Signed-off-by: tajila <[email protected]>

Author: tajila

closed/autoconf/custom-hook.m4

@@ -474,7 +474,7 @@ AC_DEFUN([OPENJ9_CONFIGURE_JFR],
     AC_MSG_RESULT([no (explicitly disabled)])
   elif test "x$enable_jfr" = x ; then
     case "$OPENJ9_PLATFORM_CODE" in
-      xa64)
+      xa64|xr64)
         AC_MSG_RESULT([yes (default)])
         OPENJ9_ENABLE_JFR=true
         ;;