arm64: Miscellaneous library functions

This patch adds udelay, memory and bit operations together with the
ksyms exports.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>

diff --cc arch/arm64/include/asm/bitops.h
Simple merge

diff --cc arch/arm64/include/asm/syscall.h
Simple merge

diff --cc arch/arm64/kernel/arm64ksyms.c
Simple merge

diff --cc arch/arm64/lib/Makefile
Simple merge

diff --cc arch/arm64/lib/bitops.c
Simple merge

diff --cc arch/arm64/lib/clear_page.S
Simple merge

diff --cc arch/arm64/lib/copy_page.S
Simple merge

diff --cc arch/arm64/lib/delay.c
Simple merge