powerpc/rtas: Keep MSR[RI] set when calling RTAS
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.15.46 by commit 5ca40fcf0da0ce2b5bc44e7d8b036535955f2e3d. For more details please see the references link.