Update to v5.11 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-5.11

Test: Built cuttlefish and flame images. Ran bionic unit tests on both.
Change-Id: Ie60337aafad4bda55af99b6c8fe9f56bf2fa787f
diff --git a/libc/kernel/uapi/linux/tls.h b/libc/kernel/uapi/linux/tls.h
index 6949d65..c765f30 100644
--- a/libc/kernel/uapi/linux/tls.h
+++ b/libc/kernel/uapi/linux/tls.h
@@ -48,6 +48,12 @@
 #define TLS_CIPHER_AES_CCM_128_SALT_SIZE 4
 #define TLS_CIPHER_AES_CCM_128_TAG_SIZE 16
 #define TLS_CIPHER_AES_CCM_128_REC_SEQ_SIZE 8
+#define TLS_CIPHER_CHACHA20_POLY1305 54
+#define TLS_CIPHER_CHACHA20_POLY1305_IV_SIZE 12
+#define TLS_CIPHER_CHACHA20_POLY1305_KEY_SIZE 32
+#define TLS_CIPHER_CHACHA20_POLY1305_SALT_SIZE 0
+#define TLS_CIPHER_CHACHA20_POLY1305_TAG_SIZE 16
+#define TLS_CIPHER_CHACHA20_POLY1305_REC_SEQ_SIZE 8
 #define TLS_SET_RECORD_TYPE 1
 #define TLS_GET_RECORD_TYPE 2
 struct tls_crypto_info {
@@ -75,6 +81,13 @@
   unsigned char salt[TLS_CIPHER_AES_CCM_128_SALT_SIZE];
   unsigned char rec_seq[TLS_CIPHER_AES_CCM_128_REC_SEQ_SIZE];
 };
+struct tls12_crypto_info_chacha20_poly1305 {
+  struct tls_crypto_info info;
+  unsigned char iv[TLS_CIPHER_CHACHA20_POLY1305_IV_SIZE];
+  unsigned char key[TLS_CIPHER_CHACHA20_POLY1305_KEY_SIZE];
+  unsigned char salt[TLS_CIPHER_CHACHA20_POLY1305_SALT_SIZE];
+  unsigned char rec_seq[TLS_CIPHER_CHACHA20_POLY1305_REC_SEQ_SIZE];
+};
 enum {
   TLS_INFO_UNSPEC,
   TLS_INFO_VERSION,