Commit 3eb3e72a3f (nand/denali: Adding Denali NAND driver support)
introduced some new options, and some of them were documented by
commit f9860cf081 (nand/denali: Document CONFIG symbols).
This commit allows users to enable/disable them via Kconfig
with more detailed help docs.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Chin Liang See <clsee@altera.com>
Cc: Scott Wood <scottwood@freescale.com>
