Changed APIs from wc_AesXts*Start -> wc_AesXts*Init. Enabled ASM for x64 in aes.c. AesXtsDecryptStart_sw same as AesXtsEncryptStart_sw so changed them to AesXtsInit_sw.
Changed APIs from wc_AesXts*Start -> wc_AesXts*Init. Enabled ASM for x64 in aes.c. AesXtsDecryptStart_sw same as AesXtsEncryptStart_sw so changed them to AesXtsInit_sw.