Correct ffs/fls regression for PowerPC etc

Commits

  02f99901ed1c9d828e3ea117f94ce2264bf8389e
  52d61227b66d4099b39c8309ab37cb67ee09a405

introduced a regression where platform-specific ffs/fls implementations
were defined away. This patch corrects that by using PLATFORM_xxx
instead of the name itself.

Signed-off-by: Simon Kagstrom <simon.kagstrom@netinsight.net>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Stefan Roese <sr@denx.de>
diff --git a/include/asm-i386/bitops.h b/include/asm-i386/bitops.h
index ac6285a..c7a38f2 100644
--- a/include/asm-i386/bitops.h
+++ b/include/asm-i386/bitops.h
@@ -349,7 +349,7 @@
 		"1:" : "=r" (r) : "g" (x));
 	return r+1;
 }
-#define ffs
+#define PLATFORM_FFS
 
 /**
  * hweightN - returns the hamming weight of a N-bit word