ARM: configs: gemini: Activate crypto driver

This enables the SL3516 crypto driver on the Gemini platforms
where it is available, by default in the defconfig. Clean
up some noise around the crypto options while we're at it.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Corentin Labbe <clabbe@baylibre.com>
Link: https://lore.kernel.org/r/20211206011158.4180141-1-linus.walleij@linaro.org

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Signed-off-by: Arnd Bergmann <arnd@arndb.de>