Update Linux to v5.10.109

Sourced from [1]

[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz

Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/drivers/tty/serial/arc_uart.c b/drivers/tty/serial/arc_uart.c
index d904a3a..17c3fc3 100644
--- a/drivers/tty/serial/arc_uart.c
+++ b/drivers/tty/serial/arc_uart.c
@@ -21,10 +21,6 @@
  *  -check if sysreq works
  */
 
-#if defined(CONFIG_SERIAL_ARC_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
-#define SUPPORT_SYSRQ
-#endif
-
 #include <linux/module.h>
 #include <linux/serial.h>
 #include <linux/console.h>
@@ -625,6 +621,7 @@
 	port->flags = UPF_BOOT_AUTOCONF;
 	port->line = dev_id;
 	port->ops = &arc_serial_pops;
+	port->has_sysrq = IS_ENABLED(CONFIG_SERIAL_ARC_CONSOLE);
 
 	port->fifosize = ARC_UART_TX_FIFO_SIZE;