char: fix sparse shadowed variable warnings in esp.c

flags only use was in spin_lock_irqsave/spin_lock_irgrestore pairs, no
need to redeclare for each one.

drivers/char/esp.c:1599:17: warning: symbol 'flags' shadows an earlier one
drivers/char/esp.c:1517:16: originally declared here
drivers/char/esp.c:1615:17: warning: symbol 'flags' shadows an earlier one
drivers/char/esp.c:1517:16: originally declared here
drivers/char/esp.c:1631:17: warning: symbol 'flags' shadows an earlier one
drivers/char/esp.c:1517:16: originally declared here
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/char/esp.c

@@ -1600,8 +1600,6 @@ static int set_esp_config(struct esp_struct * info,
 
 	if ((new_config.flow_off != info->config.flow_off) ||
 	    (new_config.flow_on != info->config.flow_on)) {
-		unsigned long flags;
-
 		info->config.flow_off = new_config.flow_off;
 		info->config.flow_on = new_config.flow_on;
 
@@ -1616,8 +1614,6 @@ static int set_esp_config(struct esp_struct * info,
 
 	if ((new_config.rx_trigger != info->config.rx_trigger) ||
 	    (new_config.tx_trigger != info->config.tx_trigger)) {
-		unsigned long flags;
-
 		info->config.rx_trigger = new_config.rx_trigger;
 		info->config.tx_trigger = new_config.tx_trigger;
 		spin_lock_irqsave(&info->lock, flags);
@@ -1632,8 +1628,6 @@ static int set_esp_config(struct esp_struct * info,
 	}
 
 	if (new_config.rx_timeout != info->config.rx_timeout) {
-		unsigned long flags;
-
 		info->config.rx_timeout = new_config.rx_timeout;
 		spin_lock_irqsave(&info->lock, flags);