[JFFS2] use the ref_offset macro
[JFFS2] use the ref_offset macro

Don't use ref->flash_offset directly in debugging code, use the ref_offset macro instead.

Signed-off-by: Kyungmin Park <504c23c4986a3760712724894be3105092c27331@samsung.com>
Signed-off-by: Artem Bityutskiy <e9e216302cf029bb622c0383fe00c08402269f9b@infradead.org>

TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs