payloads: Add whitespace around '<<'

Change-Id: I0659f6ec59fb808b4cedf57d60d737c13c250042
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/20396
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

payloads/libpayload/drivers/usb/uhci_private.h

@@ -57,7 +57,7 @@ typedef struct {
 	u32 token;
 #define TD_PID_MASK 0xff
 #define TD_DEVADDR_SHIFT 8
-#define TD_DEVADDR_MASK (((1<<7)-1) << TD_DEVADDR_SHIFT)
+#define TD_DEVADDR_MASK (((1 << 7)-1) << TD_DEVADDR_SHIFT)
 #define TD_EP_SHIFT 15
 #define TD_EP_MASK (0xf << TD_EP_SHIFT)
 #define TD_TOGGLE_SHIFT 19