misc: vmw_balloon: Remove braces to fix build for clang.

Based on a patch from: PaX Team <pageexec at freemail.hu> in a mailing
list message at:
	http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20120507/142707.html

Clang chokes on the notation "inl (%dx)" but works for "inl %dx"; GNU as accepts both forms.

CC: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: NJan-Simon Möller <dl9pf@gmx.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/misc/vmw_balloon.c

@@ -133,7 +133,7 @@ MODULE_LICENSE("GPL");
 #define VMWARE_BALLOON_CMD(cmd, data, result)		\
 ({							\
 	unsigned long __stat, __dummy1, __dummy2;	\
-	__asm__ __volatile__ ("inl (%%dx)" :		\
+	__asm__ __volatile__ ("inl %%dx" :		\
 		"=a"(__stat),				\
 		"=c"(__dummy1),				\
 		"=d"(__dummy2),				\