sdhci_fsl_fdt.c: Add a missing call to mmc_fdt_parse.
Add a missing call to mmc_fdt_parse, without it some dts properties
are not parsed.
Submitted by: Lukasz Hajec <lha@semihalf.com>
Reviewed by: manu
Obtained from: Semihalf
Sponsored by: Alstom Group
Differential Revision: https://reviews.freebsd.org/D30122