[PATCH] turn many #if $undefined_string into #ifdef $undefined_string

turn many #if $undefined_string into #ifdef $undefined_string to fix some
warnings after -Wno-def was added to global CFLAGS

Signed-off-by: Olaf Hering <olh@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/include/linux/ftape.h b/include/linux/ftape.h
index c6b38d5..72faeec 100644
--- a/include/linux/ftape.h
+++ b/include/linux/ftape.h
@@ -165,7 +165,7 @@
 #  undef  CONFIG_FT_FDC_DMA
 #  define CONFIG_FT_FDC_DMA 2
 # endif
-#elif CONFIG_FT_ALT_FDC == 1  /* CONFIG_FT_MACH2 */
+#elif defined(CONFIG_FT_ALT_FDC)  /* CONFIG_FT_MACH2 */
 # if CONFIG_FT_FDC_BASE == 0
 #  undef  CONFIG_FT_FDC_BASE
 #  define CONFIG_FT_FDC_BASE 0x370