Update to v6.8 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-6.8

Test: Builds and bionic unit tests pass on raven.
Test: Able to log in to an Android GO 32 bit device.
Change-Id: I0022cdb20c19726f526acaab2866f1e25794b77e
diff --git a/libc/kernel/uapi/sound/scarlett2.h b/libc/kernel/uapi/sound/scarlett2.h
new file mode 100644
index 0000000..13e6abe
--- /dev/null
+++ b/libc/kernel/uapi/sound/scarlett2.h
@@ -0,0 +1,30 @@
+/*
+ * This file is auto-generated. Modifications will be lost.
+ *
+ * See https://android.googlesource.com/platform/bionic/+/master/libc/kernel/
+ * for more information.
+ */
+#ifndef __UAPI_SOUND_SCARLETT2_H
+#define __UAPI_SOUND_SCARLETT2_H
+#include <linux/types.h>
+#include <linux/ioctl.h>
+#define SCARLETT2_HWDEP_MAJOR 1
+#define SCARLETT2_HWDEP_MINOR 0
+#define SCARLETT2_HWDEP_SUBMINOR 0
+#define SCARLETT2_HWDEP_VERSION ((SCARLETT2_HWDEP_MAJOR << 16) | (SCARLETT2_HWDEP_MINOR << 8) | SCARLETT2_HWDEP_SUBMINOR)
+#define SCARLETT2_HWDEP_VERSION_MAJOR(v) (((v) >> 16) & 0xFF)
+#define SCARLETT2_HWDEP_VERSION_MINOR(v) (((v) >> 8) & 0xFF)
+#define SCARLETT2_HWDEP_VERSION_SUBMINOR(v) ((v) & 0xFF)
+#define SCARLETT2_IOCTL_PVERSION _IOR('S', 0x60, int)
+#define SCARLETT2_IOCTL_REBOOT _IO('S', 0x61)
+#define SCARLETT2_SEGMENT_ID_SETTINGS 0
+#define SCARLETT2_SEGMENT_ID_FIRMWARE 1
+#define SCARLETT2_SEGMENT_ID_COUNT 2
+#define SCARLETT2_IOCTL_SELECT_FLASH_SEGMENT _IOW('S', 0x62, int)
+#define SCARLETT2_IOCTL_ERASE_FLASH_SEGMENT _IO('S', 0x63)
+struct scarlett2_flash_segment_erase_progress {
+  unsigned char progress;
+  unsigned char num_blocks;
+};
+#define SCARLETT2_IOCTL_GET_ERASE_PROGRESS _IOR('S', 0x64, struct scarlett2_flash_segment_erase_progress)
+#endif