* cipher/asm-common-aarch64.h (SECTION_RODATA)
(GET_DATA_POINTER): New.
(GET_LOCAL_POINTER): Remove.
* cipher/camellia-aarch64.S: Move constant data to read-only data
section; Remove unneeded '.ltorg'.
* cipher/chacha20-aarch64.S: Likewise.
* cipher/cipher-gcm-armv8-aarch64-ce.S: Likewise.
* cipher/crc-armv8-aarch64-ce.S: Likewise.
* cipher/rijndael-aarch64.S: Likewise.
* cipher/sha1-armv8-aarch64-ce.S: Likewise.
* cipher/sha256-armv8-aarch64-ce.S: Likewise.
* cipher/sm3-aarch64.S: Likewise.
* cipher/sm3-armv8-aarch64-ce.S: Likewise.
* cipher/sm4-aarch64.S: Likewise.
* cipher/sm4-armv9-aarch64-sve-ce.S: Likewise.
* cipher/twofish-aarch64.S: Likewise.