fix(aws-lc): disable AVX512 to reduce binary size by 600k

After replacing aws-gcm with aws-lc AES-GCM implementation, we noticed
the binary size increased by 600k. This is mostly due to the AVX512
functions taking a ridiculous amount of space.

0000000002662240 0000000000339921 t aws_lc_0_32_3_aes_gcm_decrypt_avx512
0000000002322304 0000000000339925 t aws_lc_0_32_3_aes_gcm_encrypt_avx512

This commit disables AVX512 support in AWS-LC as we didn't measure any
performance penalty.

Signed-off-by: Riccardo Mancini <[email protected]>

Author: Manciukic

.cargo/config.toml

@@ -9,3 +9,6 @@ git-fetch-with-cli = true
 
 [env]
 AWS_LC_SYS_NO_JITTER_ENTROPY = "1"
+# disable AVX512 as it adds 600k of binary size
+# this was only used for MMDS token generation
+AWS_LC_SYS_CFLAGS = "-DMY_ASSEMBLER_IS_TOO_OLD_FOR_512AVX"