Update to v6.1 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-6.1

Test: Bionic unit tests pass.
Change-Id: I9414fb5e698a9806b85eb09e37d763849f08a468
diff --git a/libc/kernel/uapi/linux/cec.h b/libc/kernel/uapi/linux/cec.h
index b90dc49..3953fe3 100644
--- a/libc/kernel/uapi/linux/cec.h
+++ b/libc/kernel/uapi/linux/cec.h
@@ -340,6 +340,7 @@
 #define CEC_OP_FEAT_DEV_HAS_SET_AUDIO_RATE 0x08
 #define CEC_OP_FEAT_DEV_SINK_HAS_ARC_TX 0x04
 #define CEC_OP_FEAT_DEV_SOURCE_HAS_ARC_RX 0x02
+#define CEC_OP_FEAT_DEV_HAS_SET_AUDIO_VOLUME_LEVEL 0x01
 #define CEC_MSG_GIVE_FEATURES 0xa5
 #define CEC_MSG_DECK_CONTROL 0x42
 #define CEC_OP_DECK_CTL_MODE_SKIP_FWD 1
@@ -554,6 +555,7 @@
 #define CEC_MSG_SYSTEM_AUDIO_MODE_STATUS 0x7e
 #define CEC_OP_AUD_FMT_ID_CEA861 0
 #define CEC_OP_AUD_FMT_ID_CEA861_CXT 1
+#define CEC_MSG_SET_AUDIO_VOLUME_LEVEL 0x73
 #define CEC_MSG_SET_AUDIO_RATE 0x9a
 #define CEC_OP_AUD_RATE_OFF 0
 #define CEC_OP_AUD_RATE_WIDE_STD 1