dt-bindings: mmc: spacemit,sdhci: add reset support
The SpacemiT SDHCI controller has two reset lines, one connect to AXI bus
which shared by all controllers, while another one connect to individual
controller separately.
Signed-off-by: Yixun Lan <dlan@gentoo.org> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>