[JFFS2] Add 'jeb' argument to jffs2_prealloc_raw_node_refs()

Preallocation of refs is shortly going to be a per-eraseblock thing,
rather than per-filesystem. Add the required argument to the function.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

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

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

diff --cc fs/jffs2/nodelist.h
Simple merge

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

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

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

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