Configure the SD controller to handle the SD card slot.
* Galileo supports a removable SD card slot.
* Set SD card initialization frequency to 100 MHz.
* Set default removable delays.
* Build SD/MMC components by default
TEST=Build and run on Galileo Gen2
Change-Id: Iaf4faa40fe01eca98abffa2681f61fd8e059f0c4
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-on: https://review.coreboot.org/19212
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>