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

For several MoviNAND eMMC parts, there are known issues with secure
erase and secure trim.  For these specific MoviNAND devices, we skip
these operations.

Specifically, there is a bug in the eMMC firmware that causes
unrecoverable corruption when the MMC is erased with MMC_CAP_ERASE
enabled.

References:

http://forum.xda-developers.com/showthread.php?t=1644364
https://plus.google.com/111398485184813224730/posts/21pTYfTsCkB#111398485184813224730/posts/21pTYfTsCkB

Change-Id: Ib28d3a8dcf55b84403f37b93bc01875e17fe0bdd
Signed-off-by: Ian Chen <ian.cy.chen@samsung.com>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Cc: stable <stable@vger.kernel.org> [3.0+]
Signed-off-by: Chris Ball <cjb@laptop.org>
Revert "Disable MMC_CAP_ERASE as a precaution"

Fixed by 60408f4f6ba754a9cd6de66de8ddbf27457459ef.

Verified by doing full /data wipe multiple times.

This reverts commit c0e6ee0b15cb48395384851c931b7baf4b8dde00.

Conflicts:
	drivers/mmc/host/sdhci-tegra.c

Change-Id: I46bb423ab4c60821e14346f6b8a5d77038521bb3