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/usb/serial/console.c b/drivers/usb/serial/console.c
index 7d28930..b97aa40 100644
--- a/drivers/usb/serial/console.c
+++ b/drivers/usb/serial/console.c
@@ -79,7 +79,7 @@
 		if (*s)
 			doflow = (*s++ == 'r');
 	}
-	
+
 	/* Sane default */
 	if (baud == 0)
 		baud = 9600;
@@ -102,6 +102,9 @@
 		break;
 	}
 
+	if (doflow)
+		cflag |= CRTSCTS;
+
 	/*
 	 * no need to check the index here: if the index is wrong, console
 	 * code won't call us