aesni - Rename amd64 -> x86_64

diff --git a/sys/crypto/aesni/aesencdec_amd64.S b/sys/crypto/aesni/aesencdec_x86_64.S
similarity index 100%
rename from sys/crypto/aesni/aesencdec_amd64.S
rename to sys/crypto/aesni/aesencdec_x86_64.S

diff --git a/sys/crypto/aesni/aeskeys_amd64.S b/sys/crypto/aesni/aeskeys_x86_64.S
similarity index 100%
rename from sys/crypto/aesni/aeskeys_amd64.S
rename to sys/crypto/aesni/aeskeys_x86_64.S