serial: core: fix kernel-doc for uart_port_unlock_irqrestore()

Fix the function name to avoid a kernel-doc warning:

include/linux/serial_core.h:666: warning: expecting prototype for uart_port_lock_irqrestore(). Prototype was for uart_port_unlock_irqrestore() instead

Fixes: b0af4bc ("serial: core: Provide port lock wrappers")
Signed-off-by: Randy Dunlap <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: John Ogness <[email protected]>
Cc: [email protected]
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Jiri Slaby <[email protected]>
Reviewed-by: John Ogness <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: rddunlap

include/linux/serial_core.h

@@ -658,7 +658,7 @@ static inline void uart_port_unlock_irq(struct uart_port *up)
 }
 
 /**
- * uart_port_lock_irqrestore - Unlock the UART port, restore interrupts
+ * uart_port_unlock_irqrestore - Unlock the UART port, restore interrupts
  * @up:		Pointer to UART port structure
  * @flags:	The saved interrupt flags for restore
  */