[SERIAL] Small time UART configuration fix for AU1100 processor

The AU1100 processor does not have an internal UART2. Only
UART0, UART1 and UART3 exist. This patch removes the non existing
UART2 and replaces it with a descriptive comment.
Signed-off-by: NFreddy Spierenburg <freddy@dusktilldawn.nl>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

drivers/serial/8250_au1x00.c

@@ -51,7 +51,7 @@ static struct plat_serial8250_port au1x00_data[] = {
 #elif defined(CONFIG_SOC_AU1100)
 	PORT(UART0_ADDR, AU1100_UART0_INT),
 	PORT(UART1_ADDR, AU1100_UART1_INT),
-	PORT(UART2_ADDR, AU1100_UART2_INT),
+	/* The internal UART2 does not exist on the AU1100 processor. */
 	PORT(UART3_ADDR, AU1100_UART3_INT),
 #elif defined(CONFIG_SOC_AU1550)
 	PORT(UART0_ADDR, AU1550_UART0_INT),