Move data pointer macro for 64-bit ARM assembly to common header
* cipher/asm-common-aarch64.h (GET_DATA_POINTER): New. * cipher/chacha20-aarch64.S (GET_DATA_POINTER): Remove. * cipher/cipher-gcm-armv8-aarch64-ce.S (GET_DATA_POINTER): Remove. * cipher/crc-armv8-aarch64-ce.S (GET_DATA_POINTER): Remove. * cipher/rijndael-armv8-aarch64-ce.S (GET_DATA_POINTER): Remove. * cipher/sha1-armv8-aarch64-ce.S (GET_DATA_POINTER): Remove. * cipher/sha256-armv8-aarch64-ce.S (GET_DATA_POINTER): Remove.
- Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>