relnote: add ARM64 spinlock item

Bruce Momjian <bruce@momjian.us>

Commit: 40131af573514d9915798f5fa6399ddc3d214937
Author: Bruce Momjian <bruce@momjian.us>
Date: 2022-05-10T20:47:48Z
Releases: 15.0
relnote:  add ARM64 spinlock item

Reported-by: Jonathan Katz

Discussion: per private email

Files

PathChange+/−
doc/src/sgml/release-15.sgml modified +11 −0

Documentation touched