sparse: lpc uart interrupt pointer endianness

hw/lpc-uart.c:674:47: warning: incorrect type in argument 1 (different base types)
hw/lpc-uart.c:674:47:    expected restricted beint32_t [usertype] be_val
hw/lpc-uart.c:674:47:    got unsigned int const [usertype]

Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>

hw/lpc-uart.c

@@ -617,7 +617,7 @@ void uart_init(void)
 	const struct dt_property *prop;
 	struct dt_node *n;
 	char *path __unused;
-	const uint32_t *irqp;
+	const be32 *irqp;
 
 	/* Clean up after early_uart_init() */
 	mmio_uart_base = NULL;