Update to v6.0 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-6.0

Test: Boots on coral.
Test: Bionic unit tests pass.
Change-Id: I282de83f23b432bef58214108a93700bdadddf0f
diff --git a/libc/kernel/uapi/linux/serial_reg.h b/libc/kernel/uapi/linux/serial_reg.h
index b6648f8..e41e649 100644
--- a/libc/kernel/uapi/linux/serial_reg.h
+++ b/libc/kernel/uapi/linux/serial_reg.h
@@ -99,7 +99,7 @@
 #define UART_LSR_PE 0x04
 #define UART_LSR_OE 0x02
 #define UART_LSR_DR 0x01
-#define UART_LSR_BRK_ERROR_BITS 0x1E
+#define UART_LSR_BRK_ERROR_BITS (UART_LSR_BI | UART_LSR_FE | UART_LSR_PE | UART_LSR_OE)
 #define UART_MSR 6
 #define UART_MSR_DCD 0x80
 #define UART_MSR_RI 0x40
@@ -109,7 +109,7 @@
 #define UART_MSR_TERI 0x04
 #define UART_MSR_DDSR 0x02
 #define UART_MSR_DCTS 0x01
-#define UART_MSR_ANY_DELTA 0x0F
+#define UART_MSR_ANY_DELTA (UART_MSR_DDCD | UART_MSR_TERI | UART_MSR_DDSR | UART_MSR_DCTS)
 #define UART_SCR 7
 #define UART_DLL 0
 #define UART_DLM 1