src/mainboard: Remove unnecessary whitespace before "\n"

Change-Id: I9789b0b3339435fbe30c69221826bf23c9b3c77b
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/16283
Tested-by: build bot (Jenkins)
Reviewed-by: Omar Pakker
Reviewed-by: Martin Roth <martinroth@google.com>

src/mainboard/iwave/iWRainbowG6/romstage.c

@@ -259,7 +259,7 @@ int selectcard(void)
 {
 	int i;
 
-	printk(BIOS_DEBUG, "%s", "\r\nCase 9....... \n\r");
+	printk(BIOS_DEBUG, "%s", "\r\nCase 9.......\r\n");
 	// send the length byte and command code through RFID interface
 
 	transaction1(RFID_ADDR);