[JFFS2] Add LZO compression support.

Add LZO1X compression/decompression support to jffs2.

LZO's interface doesn't entirely match that required by jffs2 so a
buffer and memcpy is unavoidable.

Signed-off-by: Richard Purdie <rpurdie@openedhand.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/fs/jffs2/Makefile b/fs/jffs2/Makefile
index c32b241..60e5d49 100644
--- a/fs/jffs2/Makefile
+++ b/fs/jffs2/Makefile
@@ -17,4 +17,5 @@
 jffs2-$(CONFIG_JFFS2_RUBIN)	+= compr_rubin.o
 jffs2-$(CONFIG_JFFS2_RTIME)	+= compr_rtime.o
 jffs2-$(CONFIG_JFFS2_ZLIB)	+= compr_zlib.o
+jffs2-$(CONFIG_JFFS2_LZO)	+= compr_lzo.o
 jffs2-$(CONFIG_JFFS2_SUMMARY)   += summary.o