[PATCH] Fix floppy.h

CROSS_64KB won't work as advertised due to missing parenthesis.

Pointed out by Joern Engel.

include/asm-i386/floppy.h

@@ -22,7 +22,7 @@
  * floppy accesses go through the track buffer.
  */
 #define _CROSS_64KB(a,s,vdma) \
-(!vdma && ((unsigned long)(a)/K_64 != ((unsigned long)(a) + (s) - 1) / K_64))
+(!(vdma) && ((unsigned long)(a)/K_64 != ((unsigned long)(a) + (s) - 1) / K_64))
 
 #define CROSS_64KB(a,s) _CROSS_64KB(a,s,use_virtual_dma & 1)