Update to v6.3 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-6.3

Test: Bionic unit tests pass.
Change-Id: I5270ef291a77343e47ef3a5fbd02b8cacf218ec5
diff --git a/libc/kernel/uapi/linux/uuid.h b/libc/kernel/uapi/linux/uuid.h
index d0f82c1..1505137 100644
--- a/libc/kernel/uapi/linux/uuid.h
+++ b/libc/kernel/uapi/linux/uuid.h
@@ -21,11 +21,9 @@
 #include <linux/types.h>
 typedef struct {
   __u8 b[16];
-} guid_t;
-#define GUID_INIT(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
-((guid_t) \
+} uuid_le;
+#define UUID_LE(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
+((uuid_le) \
 { { (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, (b) & 0xff, ((b) >> 8) & 0xff, (c) & 0xff, ((c) >> 8) & 0xff, (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) } })
-typedef guid_t uuid_le;
-#define UUID_LE(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) GUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)
 #define NULL_UUID_LE UUID_LE(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00)
 #endif