CVE-2025-38670 arm64/entry: Mask DAIF in cpu_switch_to(), call_on_irq_stack()

In the Linux kernel, the following vulnerability has been resolved: arm64/entry: Mask DAIF in cpuswitchto, callonirqstack cpuswitchto and callonirqstack manipulate SP to change to different stacks along with the Shadow Call Stack if it is enabled. Those two stack changes cannot be done atomically...