arm64: lib: Annotate {clear, copy}_page() as position-independent

arm64: lib: Annotate {clear, copy}_page() as position-independent

[ Upstream commit 8d9902055c57548bb342dc3ca78caa21e9643024 ]

clear_page() and copy_page() are suitable for use outside of the kernel
address space, so annotate them as position-independent code.

Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210319100146.1149909-2-qperret@google.com
Signed-off-by: Sasha Levin <sashal@kernel.org>