board/esd/pf5200/pf5200.c: Fix GCC 4.6 build warning

Fix:
pf5200.c: In function 'do_phypower':
pf5200.c:330:6: warning: variable 'status' set but not used
[-Wunused-but-set-variable]

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Reinhard Arlt <reinhard.arlt@esd-electronics.com>

board/esd/pf5200/pf5200.c

@@ -327,13 +327,11 @@ int phypower(int flag)
 
 int do_phypower(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 {
-	int status;
+	if (argv[1][0] == '0')
+		(void)phypower(0);
+	else
+		(void)phypower(1);
 
-	if (argv[1][0] == '0') {
-		status = phypower(0);
-	} else {
-		status = phypower(1);
-	}
 	return (0);
 }