YAFFS2: fs/yaffs2/Makefile - fix build warnings

Drop the "-DNO_Y_INLINE" setting to fix these:
yaffs_guts.h:806: warning: 'yaffs_GetBlockInfo' defined but not used

Impact on image size is negligible - for the VCMA9 board the text
segment size grew from 496353 to 496357 bytes (i. e. 0.0008%);
total image size even remained constant.
Signed-off-by: NWolfgang Denk <wd@denx.de>

fs/yaffs2/Makefile

@@ -31,7 +31,7 @@ SRCS    := $(COBJS-y:.o=.c)
 OBJS    := $(addprefix $(obj),$(COBJS-y))
 
 # -DCONFIG_YAFFS_NO_YAFFS1
-CFLAGS +=    -DCONFIG_YAFFS_DIRECT -DCONFIG_YAFFS_SHORT_NAMES_IN_RAM -DCONFIG_YAFFS_YAFFS2 -DNO_Y_INLINE -DLINUX_VERSION_CODE=0x20622
+CFLAGS +=    -DCONFIG_YAFFS_DIRECT -DCONFIG_YAFFS_SHORT_NAMES_IN_RAM -DCONFIG_YAFFS_YAFFS2 -DLINUX_VERSION_CODE=0x20622
 
 all:  $(LIB)