Revert "mmc: card: Skip secure erase on MoviNAND; causes unrecoverable corruption."

This reverts commit 1cb34850.

This is a stable backport from a kernel before v3.10 so it
shouldn't be in 3.10 twice. Nothing is broken if we leave it
though because they're just duplicate entries.

Change-Id: If33c067fbcefbcd5a590ee579e0564c54ca792d6
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>