serial: omap: repair building without PM_SLEEP

A recent bug fix in 3.10, ddd85e225c "serial: omap: prevent runtime PM for
"no_console_suspend"", introduced a regression from an obvious typo:

drivers/tty/serial/omap-serial.c:1677:14: error: 'serial_omap_complete'
undeclared here (not in a function)

This changes the incorrectly added macro to the one that we need instead.

Signed-off-by: Arnd Bergmann <[e-mail]>
Acked-by: Kevin Hilman <[e-mail]>
Signed-off-by: Bin Liu <[e-mail]>
Acked-by: Sourav Poddar<[e-mail]>
Tested-by: Sourav Poddar<[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/tty/serial/omap-serial.c

···
 }
 #else
 #define serial_omap_prepare NULL
-#define serial_omap_prepare NULL
+#define serial_omap_complete NULL
 #endif /* CONFIG_PM_SLEEP */
 
 static void omap_serial_fill_features_erratas(struct uart_omap_port *up)