include/linux/unaligned/generic.h: fix warning: preprocessor token __force redefined

include/linux/unaligned/generic.h:5:9: warning: preprocessor token __force redefined
include/linux/compiler.h:10:10: this was the original definition

fixup __force definitions in compat.h code appears to be placed
there as a cover up from a code import from linux when u-boot didn't yet
have a compiler.h, introduced by commit
b1b4e89a "Add LZO decompressor support".
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>

include/linux/unaligned/generic.h

 #ifndef _LINUX_UNALIGNED_GENERIC_H
 #define _LINUX_UNALIGNED_GENERIC_H
 
-/* define __force to nothing in U-Boot */
-#define __force
-
 /*
  * Cause a link-time error if we try an unaligned access other than
  * 1,2,4 or 8 bytes long