arm64/module: Use text-poke API for late relocations.

arm64/module: Use text-poke API for late relocations.

To enable late module patching, livepatch modules need to be able to
apply some of their relocations well after being loaded. In this
scenario however, the livepatch module text and data is already RX-only,
so special treatment is needed to make the late relocations possible. To
do this, use the text-poking API for these late relocations.

This patch is partially based off commit 88fc078a7a8f6 ("x86/module: Use
text_poke() for late relocations").

Signed-off-by: Dylan Hatch <dylanbhatch@google.com>
Acked-by: Song Liu <song@kernel.org>
Acked-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20250603223417.3700218-1-dylanbhatch@google.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>