fix parenthesis in include/asm-mips/mach-au1x00/au1000.h

Parenthesis fix in include/asm-mips/mach-au1x00/au1000.h
Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/asm-mips/mach-au1x00/au1000.h

@@ -1036,7 +1036,7 @@ enum soc_au1200_ints {
 #define USBD_INTSTAT		0xB020001C
 #  define USBDEV_INT_SOF	(1 << 12)
 #  define USBDEV_INT_HF_BIT	6
-#  define USBDEV_INT_HF_MASK	0x3f << USBDEV_INT_HF_BIT)
+#  define USBDEV_INT_HF_MASK	(0x3f << USBDEV_INT_HF_BIT)
 #  define USBDEV_INT_CMPLT_BIT	0
 #  define USBDEV_INT_CMPLT_MASK (0x3f << USBDEV_INT_CMPLT_BIT)
 #define USBD_CONFIG		0xB0200020