jffs2: Use jffs2_garbage_collect_trigger() to trigger pending erases

This is now done in a GC pass; we don't need to trigger kupdated to do it.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

diff --cc fs/jffs2/erase.c
Simple merge

diff --cc fs/jffs2/gc.c
Simple merge

diff --cc fs/jffs2/nodemgmt.c
Simple merge

diff --cc fs/jffs2/scan.c
Simple merge

diff --cc fs/jffs2/wbuf.c
Simple merge