rtc: pl031: fix rtc features null pointer dereference
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 v5.17.2 by commit 1b915703964f7e636961df04c540261dc55c6c70, it was introduced in version v5.12 by commit d9b0dd54a1943f47a381a474f8ea2c94466110c0. For more details please see the references link.