[PATCH 2/7] spl: fit: select SPL_CRYPTO_SUPPORT for SPL_FIT_SIGNATURE

[Philipp Tomsich]

> On 18.04.2020, at 00:07, Heiko Stuebner <heiko at sntech.de> wrote:
> 
> From: Heiko Stuebner <heiko.stuebner at theobroma-systems.com>
> 
> Verifying FIT images obviously needs the rsa parts of crypto
> support and while main uboot always compiles crypto support,
> it's optional for SPL and we should thus select the necessary
> option to not end up in compile errors like:
> 
>    u-boot/lib/rsa/rsa-verify.c:328: undefined reference to `rsa_mod_exp'
> 
> So select SPL_CRYPTO_SUPPORT in SPL_FIT_SIGNATURE.
> 
> Signed-off-by: Heiko Stuebner <heiko.stuebner at theobroma-systems.com>

Reviewed-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>