GSD-2023-1001359 arm64: make is_ttbrX_addr() noinstr-safe

arm64: make isttbrXaddr noinstr-safe 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 v5.10.163 by commit 0461a8c278b8fe74d19e58bc224327bef645e29...