mmc: Kconfig: Really correct dependencies SDHCI ADMA options

mmc: Kconfig: Really correct dependencies SDHCI ADMA options

When doing the investigation for commit 53bb8fdea12a ("mmc: Kconfig:
Correct dependencies SDHCI ADMA options") I missed the implications of
MMC_SDHCI_ADMA_HELPERS. The problem is that FSL_ESDHC via the
FSL_ESDHC_SUPPORT_ADMA2 option will also enable these helper functions.
This in turn means the correct dependency here is
MMC_SDHCI_ADMA_HELPERS and not *MMC_SDHCI_ADMA.

Reported-by: Heiko Thiery <heiko.thiery@gmail.com>
Signed-off-by: Tom Rini <trini@konsulko.com>