rockchip: defconfig: puma-rk3399: enable DMA for SDHCI controller

For the RK3399-Q7, we have a fast eMMC connected in an 8 bit wide
configuration to the SDHCI controller (sdhci@fe330000).  Enable DMA
within the SDHCI driver to get the best performance out of it.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
1 file changed