[SERIAL] convert uart_state.sem to uart_state.mutex

semaphore to mutex conversion.

the conversion was generated via scripts, and the result was validated
automatically via a script as well.

build and boot tested.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index a8187c3..ec35100 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -136,6 +136,7 @@
 #include <linux/spinlock.h>
 #include <linux/sched.h>
 #include <linux/tty.h>
+#include <linux/mutex.h>
 
 struct uart_port;
 struct uart_info;
@@ -284,7 +285,7 @@
 	struct uart_info	*info;
 	struct uart_port	*port;
 
-	struct semaphore	sem;
+	struct mutex		mutex;
 };
 
 #define UART_XMIT_SIZE	PAGE_SIZE